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author | zlg <zlg@zlg.space> | 2016-06-16 10:15:33 -0700 |
---|---|---|
committer | zlg <zlg@zlg.space> | 2016-06-16 10:15:33 -0700 |
commit | f8d9ff23eb8d3e3286ff5cf4d5f9493532991bb7 (patch) | |
tree | e37b327d7f93435e93a57427600d2b91fbb0cd87 | |
parent | Solve Exercise 7-2: Format arbitrary input (diff) | |
download | knr-f8d9ff23eb8d3e3286ff5cf4d5f9493532991bb7.tar.gz knr-f8d9ff23eb8d3e3286ff5cf4d5f9493532991bb7.tar.bz2 knr-f8d9ff23eb8d3e3286ff5cf4d5f9493532991bb7.tar.xz knr-f8d9ff23eb8d3e3286ff5cf4d5f9493532991bb7.zip |
The massive astyle sweep!
Code style should be consistent now. All future commits will be run through
astyle or they will be amended.
Diffstat (limited to '')
66 files changed, 72 insertions, 266 deletions
diff --git a/ch1/1-03_temp-table-header.c b/ch1/1-03_temp-table-header.c index d0d069c..682712f 100644 --- a/ch1/1-03_temp-table-header.c +++ b/ch1/1-03_temp-table-header.c @@ -11,13 +11,10 @@ int main(void) { float fahr, celsius; int lower, upper, step; - lower = 0; upper = 300; step = 20; - fahr = lower; - printf(" F | C\n"); printf("------------\n"); while (fahr <= upper) { diff --git a/ch1/1-04_celsius_converter.c b/ch1/1-04_celsius_converter.c index a397d9a..921a4df 100644 --- a/ch1/1-04_celsius_converter.c +++ b/ch1/1-04_celsius_converter.c @@ -9,13 +9,10 @@ int main(void) { float fahr, celsius; int lower, upper, step; - lower = 0; upper = 300; step = 20; - celsius = lower; - printf(" C | F\n"); printf("------------\n"); while (celsius <= upper) { diff --git a/ch1/1-05_backwards-table.c b/ch1/1-05_backwards-table.c index a09619a..634c2a9 100644 --- a/ch1/1-05_backwards-table.c +++ b/ch1/1-05_backwards-table.c @@ -11,13 +11,10 @@ int main(void) { float fahr, celsius; int lower, upper, step; - lower = 0; upper = 300; step = 20; - fahr = upper; - printf(" F | C\n"); printf("------------\n"); while (fahr >= 0) { diff --git a/ch1/1-08_space-counter.c b/ch1/1-08_space-counter.c index 0e00176..5faf181 100644 --- a/ch1/1-08_space-counter.c +++ b/ch1/1-08_space-counter.c @@ -11,7 +11,6 @@ int main(void) { char c; int blanks, tabs, nls = 0; - while ((c = getchar()) != EOF) { if (c == ' ') { blanks++; @@ -23,7 +22,6 @@ int main(void) { nls++; } } - printf("%d blanks, %d tabs, and %d newlines.\n", blanks, tabs, nls); return 0; } diff --git a/ch1/1-09_single-spacing.c b/ch1/1-09_single-spacing.c index ab629c5..3c2d80b 100644 --- a/ch1/1-09_single-spacing.c +++ b/ch1/1-09_single-spacing.c @@ -13,7 +13,6 @@ int main(void) { char c; int spaces = 0; - while ((c = getchar()) != EOF) { if (c == ' ') { if (spaces == 0) { @@ -25,6 +24,5 @@ int main(void) { putchar(c); } } - return 0; } diff --git a/ch1/1-10_literal-escapes.c b/ch1/1-10_literal-escapes.c index 903fff4..2131ba0 100644 --- a/ch1/1-10_literal-escapes.c +++ b/ch1/1-10_literal-escapes.c @@ -12,7 +12,6 @@ int main(void) { char c; - while ((c = getchar()) != EOF) { if (c == '\t') { printf("\\t"); @@ -28,6 +27,5 @@ int main(void) { } putchar(c); } - return 0; } diff --git a/ch1/1-11_word-count.c b/ch1/1-11_word-count.c index 1b4056c..85c118e 100644 --- a/ch1/1-11_word-count.c +++ b/ch1/1-11_word-count.c @@ -17,7 +17,6 @@ int main(void) { int c, nl, nw, nc, state; state = OUT; nl = nw = nc = 0; - while ((c = getchar()) != EOF) { nc++; if (c == '\n') { @@ -30,8 +29,6 @@ int main(void) { nw++; } } - printf("%d %d %d\n", nl, nw, nc); - return 0; } diff --git a/ch1/1-12_one-word-per-line.c b/ch1/1-12_one-word-per-line.c index 29a38df..6e70878 100644 --- a/ch1/1-12_one-word-per-line.c +++ b/ch1/1-12_one-word-per-line.c @@ -15,7 +15,6 @@ int main(void) { int c, nl, nw, nc, state; state = OUT; nl = nw = nc = 0; - while ((c = getchar()) != EOF) { nc++; if (c == '\n') { @@ -34,8 +33,6 @@ int main(void) { putchar(c); } } - printf("%d %d %d\n", nl, nw, nc); - return 0; } diff --git a/ch1/1-13_word-length-histogram.c b/ch1/1-13_word-length-histogram.c index b557417..a2ee173 100644 --- a/ch1/1-13_word-length-histogram.c +++ b/ch1/1-13_word-length-histogram.c @@ -33,19 +33,17 @@ int main(void) { * lengths = an array that keeps track of how often words up to x chars long * occur. */ - int state, ltrs, wrds, lines, wlen, i, j; int lengths[MAXWLENGTH]; for (i = 0; i <= MAXWLENGTH; ++i) { lengths[i] = 0; } - ltrs = wrds = wlen = 0; lines = 1; state = OUT; - // Capture input until it ends + /* Capture input until it ends */ while ((i = getchar()) != EOF) { - // If it's whitespace, we've exited a word + /* If it's whitespace, we've exited a word */ if (i == '\n' || i == ' ' || i == '\t') { if (state == IN) { ++wrds; // ...and should increase the count. @@ -54,7 +52,7 @@ int main(void) { if (wlen <= MAXWLENGTH) { ++lengths[wlen]; } - // Reset our word length now. + /* Reset our word length now. */ wlen = 0; } /* If it's a new line, we're still out of a word but need to increment the @@ -70,13 +68,12 @@ int main(void) { /* Everything that's input counts as a letter. */ ++ltrs; } - printf("\nWORD LENGTH FREQUENCY\n "); for (i = 5; i < 80; i += 5) { printf(" %2d", i); } - - printf("\n"); // End the chart heading. + /* End the chart heading. */ + printf("\n"); j = MINWLENGTH; while (j <= MAXWLENGTH) { i = lengths[j]; @@ -84,7 +81,7 @@ int main(void) { printf("%2d | ", j); while (i > 0) { printf("#"); - i = i-1; + i = i - 1; } printf("\n"); } diff --git a/ch1/1-14_character-freq-histogram.c b/ch1/1-14_character-freq-histogram.c index 9ef1d22..b037967 100644 --- a/ch1/1-14_character-freq-histogram.c +++ b/ch1/1-14_character-freq-histogram.c @@ -18,25 +18,21 @@ int main(void) { chars = string containing the characters the program will count lengths = the counts for each character */ - int c; int i = 0; char chars[] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"; - /* cnum is the number of characters found in the above string */ int cnum = 0; while (chars[i] != '\0') { cnum += 1; ++i; } - /* This array need its members to be initialized to zero. */ int lengths[cnum]; for (i = 0; i <= cnum; ++i) { lengths[i] = 0; } - - // Capture input until it ends + /* Capture input until it ends */ while ((c = getchar()) != EOF) { for (i = 0; i < cnum; ++i) { if (c == chars[i]) { @@ -44,7 +40,7 @@ int main(void) { } } } - // This is ugly and I wish I knew a better way to do it. + /* This is ugly and I wish I knew a better way to do it. */ printf("\nCHARACTER FREQUENCY\n\n 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75\n"); int iter = 0; while (iter <= cnum) { diff --git a/ch1/1-17_over-80.c b/ch1/1-17_over-80.c index 194e450..cbaced6 100644 --- a/ch1/1-17_over-80.c +++ b/ch1/1-17_over-80.c @@ -12,31 +12,25 @@ #define MINLENGTH 80 int main() { - // longline is used as a boolean that tells us if it's a line worth printing + /* longline is used as a boolean that tells us if it's a line worth printing */ int longline = 0; - - // len is simply a character counter, while c is the character itself. + /* len is simply a character counter, while c is the character itself. */ int len, c; char buffer[MINLENGTH]; - while ((c = getchar()) != EOF) { buffer[len] = c; - /* When we meet the end of the line, we need to print the rest of the line, * but only if we're already in a long line. Otherwise, reset our state. */ if (c == '\n') { - if (longline == 1 && len < MINLENGTH - 1) { buffer[len + 1] = '\0'; printf("%-s", buffer); } - len = 0; longline = 0; continue; } - /* When the buffer has filled up, output its contents! */ if (len == MINLENGTH) { buffer[len + 1] = '\0'; @@ -45,12 +39,10 @@ int main() { longline = 1; continue; } - /* If neither of the above cases are caught, increment our counter and fetch more data. */ ++len; } - return 0; } diff --git a/ch1/1-18_strip-blanks.c b/ch1/1-18_strip-blanks.c index 947ce8d..2074129 100644 --- a/ch1/1-18_strip-blanks.c +++ b/ch1/1-18_strip-blanks.c @@ -14,7 +14,6 @@ int get_line(char s[], int lim) { int c, i; - for (i = 0; i < lim - 1 && (c = getchar()) != EOF && c != '\n'; ++i) { s[i] = c; } @@ -29,7 +28,6 @@ int get_line(char s[], int lim) { int main(void) { char buffer[MAXLINELENGTH]; int c, i, len; - /* Make sure every line is gone over */ while (len = get_line(buffer, MAXLINELENGTH)) { /* An empty for statement, simply to change the i variable. @@ -37,7 +35,6 @@ int main(void) { * string terminator. */ for (i = len - 2; (i > 0) && (buffer[i] == ' ') || (buffer[i] == '\t'); --i); - /* We've reached the end of the line's actual content. Terminate the line. */ if (i >= 1) { buffer[i + 1] = '\n'; diff --git a/ch1/1-19_reverse-lines.c b/ch1/1-19_reverse-lines.c index f92c6fa..4bb83d9 100644 --- a/ch1/1-19_reverse-lines.c +++ b/ch1/1-19_reverse-lines.c @@ -23,20 +23,16 @@ int get_line(char s[], int limit) { int c, i; - for (i = 0; i < limit && (c = getchar()) != EOF && c != '\n'; ++i) { s[i] = c; } - s[i] = '\0'; - /* If I don't include this check, I can't handle blank lines */ if (c == EOF && i == 0) { return -1; } else { return i; } - } /* Directly reverse a line's contents. */ @@ -44,27 +40,23 @@ void reverse(char input[], int size) { int tmp; int i = 0; size--; - /* If len and i are the same, then there's no reason to proceed */ while (size > i) { - // Store the first character in a temporary spot... + /* Store the first character in a temporary spot... */ tmp = input[i]; - - // ... and swap! + /* ... and swap! */ input[i] = input[size]; input[size] = tmp; - - // Bring our numbers closer together + /* Bring our numbers closer together */ ++i; --size; } } int main(void) { - // An int and a string to store each line's data in + /* An int and a string to store each line's data in */ int line_len; char buffer[MAXLINELENGTH]; - while ((line_len = get_line(buffer, MAXLINELENGTH)) != -1) { reverse(buffer, line_len); printf("%s\n", buffer); diff --git a/ch1/1-21_entab.c b/ch1/1-21_entab.c index 2833520..cba68a6 100644 --- a/ch1/1-21_entab.c +++ b/ch1/1-21_entab.c @@ -19,35 +19,29 @@ int main(void) { while ((c = getchar()) != EOF) { // First thing's first, advance by a column. column++; - if (c == ' ') { /* Add to 'spaces' immediately, we'll decide if it needs to be * output later. */ spaces++; - if (column % TABWIDTH == 0 && spaces > 0) { putchar('\t'); spaces = 0; // No spaces are left when we tab! } - } else { /* Be sure to output any leftover spaces when we come across a * non-space character. This should allow for spaces between words * that don't fall along the tabstop lines. */ - while (spaces > 0) { putchar(' '); spaces--; } - // As usual, reset things on a newline. if (c == '\n') { column = 0; spaces = 0; } - // Now we can output whatever it is. putchar(c); } diff --git a/ch1/1-22_wordwrap.c b/ch1/1-22_wordwrap.c index 8cb940e..5dbeb86 100644 --- a/ch1/1-22_wordwrap.c +++ b/ch1/1-22_wordwrap.c @@ -22,7 +22,6 @@ int main() { int c, tmp, ts; int spaces = 0; int col = 0; - printf("Just type. It'll wrap to %d characters per line.\n", LINEWIDTH); while ((c = getchar()) != EOF) { if (col >= LINEWIDTH) { diff --git a/ch1/1-23_decomment.c b/ch1/1-23_decomment.c index d9c5c90..21823ef 100644 --- a/ch1/1-23_decomment.c +++ b/ch1/1-23_decomment.c @@ -43,7 +43,6 @@ int main() { if (c == '/' && status == OUT) { // Look ahead and store the character that's returned p = getchar(); - if (p == '*') { status = IN_MULTI; } else if (p == '/') { @@ -54,36 +53,27 @@ int main() { continue; } } - // Ignore everything in a single line comment until a newline if (status == IN_SINGLE) { - if (c == '\n') { putchar(c); status = OUT; continue; } - } - // Ignore everything until you reach the end of a multi comment if (status == IN_MULTI && c == '*') { p = getchar(); - if (p == '/') { status = OUT; continue; } - } - // Output everything when we're not in a comment! if (status == OUT || status == IN_STRING) { putchar(c); } - } - /* derpsauce * * diff --git a/ch1/1-24_syntax-checker.c b/ch1/1-24_syntax-checker.c index 444c562..913f859 100644 --- a/ch1/1-24_syntax-checker.c +++ b/ch1/1-24_syntax-checker.c @@ -121,7 +121,6 @@ int main() { } } } - if (escapes > 0) { printf("Invalid escape sequence on line %d!\n", linenr); return 1; @@ -162,7 +161,6 @@ int main() { printf("Unclosed comment at end of file!\n"); return 1; } - printf("All clean.\n"); return 0; } diff --git a/ch2/2-01_limits.c b/ch2/2-01_limits.c index 06d7450..2e8dff4 100644 --- a/ch2/2-01_limits.c +++ b/ch2/2-01_limits.c @@ -31,96 +31,75 @@ int main() { float fl, fla, fll; double db, dba, dbl; long double ldb, ldba, ldbl; - printf("Let's compute the minimums and maximums of each type!\n"); uc = sc = us = ss = ui = si = ul = sl = sll = ull = 0; fl = fla = fll = db = dba = dbl = ldb = ldba = ldbl = 0.0; - /* Characters */ - sc++; while (sc * 2 > sc) { sc = sc * 2 + 1; } - printf("`signed char` maximum: %d\n", sc); sc++; printf("`signed char` minimum: %d\n", sc); uc--; printf("`unsigned char` maximum: %u\n", uc); - /* Short ints */ - ss++; while (ss * 2 > ss) { ss = ss * 2 + 1; } - printf("`signed short` maximum: %d\n", ss); ss++; printf("`signed short` minimum: %d\n", ss); us--; printf("`unsigned short` maximum: %u\n", us); - /* Integers */ - si++; while (si * 2 > si) { si = si * 2 + 1; } - printf("`signed int` maximum: %d\n", si); si++; printf("`signed int` minimum: %d\n", si); ui--; printf("`unsigned int` maximum: %u\n", ui); - /* Long ints */ - sl++; while (sl * 2 > sl) { sl = sl * 2 + 1; } - printf("`signed long` maximum: %li\n", sl); sl++; printf("`signed long` minimum: %li\n", sl); ul--; printf("`unsigned long` maximum: %lu\n", ul); - /* Long long ints */ - sll++; while (sll * 2 > sll) { sll = sll * 2 + 1; } - printf("`signed long long` maximum: %lli\n", sll); sll++; printf("`signed long long` minimum: %lli\n", sll); ull--; printf("`unsigned long long` maximum: %llu\n", ull); - /* Floats */ while (fl == 0.0) { fll = fla; fla = fla + 1111e28; fl = (fl + fla) - fla; } - printf("`float` maximum: %e\n", fll); printf("`float` minimum: %e\n", 0 - fll); - /* Doubles */ while (db == 0.0) { dbl = dba; dba = dba + 1111e297; db = (db + dba) - dba; } - printf("`double` maximum: %e\n", dbl); printf("`double` minimum: %e\n", 0 - dbl); - printf("\nNow, let's cheat and use the helpful headers!\n"); printf("`char`s go from %d to %d (unsigned, up to %u)\n", SCHAR_MIN, SCHAR_MAX, UCHAR_MAX); printf("`short`s go from %d to %d (unsigned, up to %u)\n", SHRT_MIN, SHRT_MAX, USHRT_MAX); diff --git a/ch2/2-03_hex-to-int.c b/ch2/2-03_hex-to-int.c index 566bd75..4985bc5 100644 --- a/ch2/2-03_hex-to-int.c +++ b/ch2/2-03_hex-to-int.c @@ -25,16 +25,15 @@ int htoi(char s[]) { int i, val; - for (i = val = 0; isxdigit(s[i]) || toupper(s[i]) == 'X'; ++i) { if (toupper(s[i]) == 'X') { continue; } if (s[i] > '9') { val = 16 * val + (toupper(s[i]) - '7'); - // The 7 is because 'A' is 7 higher than '9' in ASCII and thus only needs - // to be knocked down by that much to fall in line with the normal integer - // conversion + /* The 7 is because 'A' is 7 higher than '9' in ASCII and thus only needs */ + /* to be knocked down by that much to fall in line with the normal integer */ + /* conversion */ } else { val = 16 * val + (s[i] - '0'); } diff --git a/ch2/2-04_squeeze-v2.c b/ch2/2-04_squeeze-v2.c index 2c3b56a..7a49585 100644 --- a/ch2/2-04_squeeze-v2.c +++ b/ch2/2-04_squeeze-v2.c @@ -16,13 +16,12 @@ * */ -// It'd be better to make this return a pointer (or string), but the book -// hasn't covered it yet! +/* It'd be better to make this return a pointer (or string), but the book */ +/* hasn't covered it yet! */ void squeeze(char s1[], char s2[]) { int i, j, k, match; - for (i = j = 0; s1[i] != '\0'; i++) { - // I don't see a way to do this without a flag + /* I don't see a way to do this without a flag */ match = 0; for (k = 0; s2[k] != '\0'; k++) { if (s1[i] == s2[k]) { @@ -30,22 +29,18 @@ void squeeze(char s1[], char s2[]) { break; } } - // check our flag. if there wasn't a match, j needs to match i's value + /* check our flag. if there wasn't a match, j needs to match i's value */ if (!match) { s1[j++] = s1[i]; } } - s1[j] = '\0'; } int main() { char foo[16] = "foobarbaz"; char bar[16] = "boz"; - squeeze(foo, bar); - printf("%s\n", foo); // Should read "fara" - return 0; } diff --git a/ch2/2-05_any-func.c b/ch2/2-05_any-func.c index c515fab..6e09de1 100644 --- a/ch2/2-05_any-func.c +++ b/ch2/2-05_any-func.c @@ -33,12 +33,11 @@ int main() { char foo[80] = "argle bargle"; char bar[80] = "toobz"; int result; - if ((result = any(foo, bar)) != -1) { printf("Found a match at position %d!\n", result); } else { printf("No match found.\n"); } - // Should return a match at index 6. + /* Should return a match at index 6. */ return 0; } diff --git a/ch3/3-01_binsearch2.c b/ch3/3-01_binsearch2.c index bcd66c3..6502273 100644 --- a/ch3/3-01_binsearch2.c +++ b/ch3/3-01_binsearch2.c @@ -24,7 +24,6 @@ int binsearch(int x, int v[], int n) { int low, mid, high; - low = 0; high = n - 1; while (low <= high) { @@ -42,10 +41,8 @@ int binsearch(int x, int v[], int n) { int binsearch2(int x, int v[], int n) { int low, mid, high; - low = 0; high = n - 1; - while (low < high) { mid = (low + high) / 2; if (x <= v[mid]) { @@ -54,7 +51,6 @@ int binsearch2(int x, int v[], int n) { low = mid + 1; } } - if (x == v[low]) { return low; } else { diff --git a/ch3/3-02_escape.c b/ch3/3-02_escape.c index 04910ec..25bfa34 100644 --- a/ch3/3-02_escape.c +++ b/ch3/3-02_escape.c @@ -17,7 +17,7 @@ void escape(char s[], char t[]) { int i, j; j = 0; for (i = 0; t[i] != '\0'; i++) { - switch(t[i]) { + switch (t[i]) { case '\n': s[j++] = '\\'; s[j++] = 'n'; diff --git a/ch3/3-03_expand.c b/ch3/3-03_expand.c index b0a4011..f00ba6a 100644 --- a/ch3/3-03_expand.c +++ b/ch3/3-03_expand.c @@ -56,27 +56,19 @@ int main() { char woot[21] = "-a-f0-36-9b-h-"; char derp[21] = "a-28-t"; char dest[61] = ""; - printf("%26s\n", "INPUT | OUTPUT"); printf("%27s\n", "-----------------"); - expand(foo, dest); printf("%16s => %s\n", foo, dest); - expand(bar, dest); printf("%16s => %s\n", bar, dest); - expand(baz, dest); printf("%16s => %s\n", baz, dest); - expand(fob, dest); printf("%16s => %s\n", fob, dest); - expand(woot, dest); printf("%16s => %s\n", woot, dest); - expand(derp, dest); printf("%16s => %s\n", derp, dest); - return 0; } diff --git a/ch3/3-04_itoa2.c b/ch3/3-04_itoa2.c index 6c2fa2f..099b9de 100644 --- a/ch3/3-04_itoa2.c +++ b/ch3/3-04_itoa2.c @@ -21,8 +21,7 @@ void reverse(char s[]) { int c, i, j; - - for (i = 0, j = strlen(s)-1; i < j; i++, j--) { + for (i = 0, j = strlen(s) - 1; i < j; i++, j--) { c = s[i]; s[i] = s[j]; s[j] = c; @@ -31,7 +30,6 @@ void reverse(char s[]) { void itoa(int n, char s[]) { int i, sign, min; // Add 'min' for later use - if ((sign = n) < 0) { /* Detect this and add one so it can properly be made positive */ if (n == INT_MIN) { @@ -62,7 +60,6 @@ int main() { int tests[5] = {INT_MIN, INT_MAX, -300, 172, 38478235}; char st[101] = ""; int i; - for (i = 0; i < 5; i++) { itoa(tests[i], st); printf("%12d in string form is %12s\n", tests[i], st); diff --git a/ch3/3-05_itob.c b/ch3/3-05_itob.c index 58066e5..fdb3a15 100644 --- a/ch3/3-05_itob.c +++ b/ch3/3-05_itob.c @@ -16,8 +16,7 @@ void reverse(char s[]) { int c, i, j; - - for (i = 0, j = strlen(s)-1; i < j; i++, j--) { + for (i = 0, j = strlen(s) - 1; i < j; i++, j--) { c = s[i]; s[i] = s[j]; s[j] = c; @@ -26,7 +25,6 @@ void reverse(char s[]) { void itob(int n, char s[], unsigned b) { int i, sign, min, rem; // Add 'min' for later use - if ((sign = n) < 0) { /* Detect this and add one so it can properly be made positive */ if (n == INT_MIN) { @@ -76,7 +74,6 @@ int main() { int tests[5] = {INT_MIN, INT_MAX, -300, 172, 38478235}; char st[101] = ""; int i; - for (i = 0; i < 5; i++) { itob(tests[i], st, 16); printf("%12d in string form is %12s\n", tests[i], st); diff --git a/ch3/3-06_itoa3.c b/ch3/3-06_itoa3.c index 3c28b0b..da60092 100644 --- a/ch3/3-06_itoa3.c +++ b/ch3/3-06_itoa3.c @@ -15,8 +15,7 @@ void reverse(char s[]) { int c, i, j; - - for (i = 0, j = strlen(s)-1; i < j; i++, j--) { + for (i = 0, j = strlen(s) - 1; i < j; i++, j--) { c = s[i]; s[i] = s[j]; s[j] = c; @@ -25,7 +24,6 @@ void reverse(char s[]) { void itoa(int n, char s[], unsigned fw) { int i, sign, min; // Add 'min' for later use - if ((sign = n) < 0) { /* Detect this and add one so it can properly be made positive */ if (n == INT_MIN) { @@ -58,7 +56,7 @@ void itoa(int n, char s[], unsigned fw) { int main() { int i; char foo[16] = ""; - int tests[5] = {-25, 409689, 8, -1000, 135}; + int tests[5] = { -25, 409689, 8, -1000, 135}; for (i = 0; i < 5; i++) { itoa(tests[i], foo, 5); printf("Pad to 5 spaces! '%s'\n", foo); diff --git a/ch4/4-01_strrindex.c b/ch4/4-01_strrindex.c index b6400c4..7818743 100644 --- a/ch4/4-01_strrindex.c +++ b/ch4/4-01_strrindex.c @@ -30,8 +30,7 @@ void reverse(char s[]) { int c, i, j; - - for (i = 0, j = strlen(s)-1; i < j; i++, j--) { + for (i = 0, j = strlen(s) - 1; i < j; i++, j--) { c = s[i]; s[i] = s[j]; s[j] = c; @@ -40,7 +39,6 @@ void reverse(char s[]) { int strindex(char s[], char t[]) { int i, j, k; - for (i = 0; s[i] != '\0'; i++) { for (j = i, k = 0; t[k] != '\0' && s[j] == t[k]; j++, k++) { } @@ -63,7 +61,6 @@ int strrindex(char s[], char t[]) { int o = strindex(s, t) + strlen(t); reverse(s); reverse(t); - // Be sure to return the correct offset with some math :3 return (strlen(s) - o); } @@ -73,7 +70,6 @@ int main() { char needle[MAXLINE] = "ned"; int pos = strrindex(haystack, needle); int i = 0; - /* This is mostly just to provide a handy visual aid */ printf("The phrase %s's rightmost occurrence is %d:\n", needle, pos); printf("%s\n", haystack); diff --git a/ch4/4-02_atof2.c b/ch4/4-02_atof2.c index 69c42fc..a70e881 100644 --- a/ch4/4-02_atof2.c +++ b/ch4/4-02_atof2.c @@ -19,13 +19,10 @@ double atof(char s[]) { double val, power; int i, sign, esign, exp; - /* Skip whitespace */ for (i = 0; isspace(s[i]); i++) { } - sign = (s[i] == '-') ? -1 : 1; - if (s[i] == '+' || s[i] == '-') { i++; } diff --git a/ch4/4-03_calc-modulus.c b/ch4/4-03_calc-modulus.c index 05d5c1b..e4cfb9d 100644 --- a/ch4/4-03_calc-modulus.c +++ b/ch4/4-03_calc-modulus.c @@ -46,7 +46,6 @@ int main() { int type; double op2; char s[MAXOP]; - while ((type = getop(s)) != EOF) { switch (type) { case NUMBER: @@ -109,7 +108,6 @@ double pop(void) { int getop(char s[]) { int i, c; - while ((s[0] = c = getch()) == ' ' || c == '\t') { } s[1] = '\0'; diff --git a/ch4/4-04_top-swap.c b/ch4/4-04_top-swap.c index 2f884d4..5c60e3b 100644 --- a/ch4/4-04_top-swap.c +++ b/ch4/4-04_top-swap.c @@ -48,7 +48,6 @@ int main() { int type; double op2; char s[MAXOP]; - while ((type = getop(s)) != EOF) { switch (type) { case NUMBER: @@ -128,7 +127,6 @@ double pop(void) { int getop(char s[]) { int i = 0; int c, next; - while ((s[0] = c = getch()) == ' ' || c == '\t') { } s[1] = '\0'; @@ -147,7 +145,6 @@ int getop(char s[]) { } else { c = getch(); } - while (isdigit(s[++i] = c)) { c = getch(); } diff --git a/ch4/4-05_math-funcs.c b/ch4/4-05_math-funcs.c index 6c22767..45c350b 100644 --- a/ch4/4-05_math-funcs.c +++ b/ch4/4-05_math-funcs.c @@ -48,7 +48,6 @@ int main() { int type; double op2; char s[MAXOP]; - while ((type = getop(s)) != EOF) { switch (type) { case NUMBER: @@ -143,7 +142,6 @@ double pop(void) { int getop(char s[]) { int i = 0; int c, next; - while ((s[0] = c = getch()) == ' ' || c == '\t') { } s[1] = '\0'; @@ -162,7 +160,6 @@ int getop(char s[]) { } else { c = getch(); } - while (isdigit(s[++i] = c)) { c = getch(); } diff --git a/ch4/4-06_var-support.c b/ch4/4-06_var-support.c index 02b1d09..5df257a 100644 --- a/ch4/4-06_var-support.c +++ b/ch4/4-06_var-support.c @@ -59,7 +59,6 @@ int main() { double op2; char s[MAXOP]; char ltr; - while ((type = getop(s)) != EOF) { if (isalpha(type) && islower(type)) { push(fetch_var(type)); @@ -180,7 +179,6 @@ double pop(void) { int getop(char s[]) { int i = 0; int c, next; - while ((s[0] = c = getch()) == ' ' || c == '\t') { } s[1] = '\0'; @@ -202,7 +200,6 @@ int getop(char s[]) { } else { c = getch(); } - while (isdigit(s[++i] = c)) { c = getch(); } diff --git a/ch4/4-07_ungets.c b/ch4/4-07_ungets.c index 63a7d7f..61e933b 100644 --- a/ch4/4-07_ungets.c +++ b/ch4/4-07_ungets.c @@ -54,7 +54,6 @@ int main() { double op2; char s[MAXOP]; char ltr; - while ((type = getop(s)) != EOF) { if (isalpha(type) && islower(type)) { push(fetch_var(type)); @@ -175,7 +174,6 @@ double pop(void) { int getop(char s[]) { int i = 0; int c, next; - while ((s[0] = c = getch()) == ' ' || c == '\t') { } s[1] = '\0'; @@ -197,7 +195,6 @@ int getop(char s[]) { } else { c = getch(); } - while (isdigit(s[++i] = c)) { c = getch(); } diff --git a/ch4/4-08_one-char.c b/ch4/4-08_one-char.c index 8080453..6a031b5 100644 --- a/ch4/4-08_one-char.c +++ b/ch4/4-08_one-char.c @@ -53,7 +53,6 @@ int main() { double op2; char s[MAXOP]; char ltr; - while ((type = getop(s)) != EOF) { if (isalpha(type) && islower(type)) { push(fetch_var(type)); @@ -174,7 +173,6 @@ double pop(void) { int getop(char s[]) { int i = 0; int c, next; - while ((s[0] = c = getch()) == ' ' || c == '\t') { } s[1] = '\0'; @@ -196,7 +194,6 @@ int getop(char s[]) { } else { c = getch(); } - while (isdigit(s[++i] = c)) { c = getch(); } diff --git a/ch4/4-09_pushed-eof.c b/ch4/4-09_pushed-eof.c index f130992..53a1af4 100644 --- a/ch4/4-09_pushed-eof.c +++ b/ch4/4-09_pushed-eof.c @@ -53,7 +53,6 @@ int main() { double op2; char s[MAXOP]; char ltr; - ungetch(EOF); while ((type = getop(s)) != EOF) { if (isalpha(type) && islower(type)) { @@ -175,7 +174,6 @@ double pop(void) { int getop(char s[]) { int i = 0; int c, next; - while ((s[0] = c = getch()) == ' ' || c == '\t') { } s[1] = '\0'; @@ -197,7 +195,6 @@ int getop(char s[]) { } else { c = getch(); } - while (isdigit(s[++i] = c)) { c = getch(); } diff --git a/ch4/4-10_getline-calc.c b/ch4/4-10_getline-calc.c index 499e71a..a801f0c 100644 --- a/ch4/4-10_getline-calc.c +++ b/ch4/4-10_getline-calc.c @@ -63,7 +63,6 @@ int main() { double op2; char s[MAXOP]; char ltr; - while (mygetline(buf, BUFSIZE) != 0) { bufp = 0; while ((type = getop(s)) != '\0') { @@ -188,7 +187,6 @@ double pop(void) { int getop(char s[]) { int i, c; - while ((s[0] = c = buf[bufp++]) == ' ' || c == '\t'); if (c >= 'a' && c <= 'z') { return c; @@ -210,7 +208,6 @@ int getop(char s[]) { } else { s[i] = c; } - if (isdigit(c)) { while (isdigit(s[++i] = c = buf[bufp++])); } @@ -264,7 +261,6 @@ double fetch_last(void) { int mygetline(char s[], int lim) { int c, i = 0; - while (--lim > 0 && (c = getchar()) != EOF && c != '\n') { s[i++] = c; } diff --git a/ch4/4-11_getop-v2.c b/ch4/4-11_getop-v2.c index 6c2349b..dca0dbb 100644 --- a/ch4/4-11_getop-v2.c +++ b/ch4/4-11_getop-v2.c @@ -51,7 +51,6 @@ int main() { double op2; char s[MAXOP]; char ltr; - while ((type = getop(s)) != EOF) { if (isalpha(type) && islower(type)) { push(fetch_var(type)); @@ -173,7 +172,6 @@ int getop(char s[]) { int i = 0; int c, next; static int buf = EOF; - if (buf != EOF && buf != ' ' && buf != '\t' && !isdigit(buf) && buf != '.' && (buf < 'a' || buf > 'z')) { c = buf; buf = EOF; @@ -205,7 +203,6 @@ int getop(char s[]) { } else { c = getch(); } - while (isdigit(s[++i] = c)) { c = getch(); } diff --git a/ch4/4-12_recursive-itoa.c b/ch4/4-12_recursive-itoa.c index f2ebdcf..1a6afc4 100644 --- a/ch4/4-12_recursive-itoa.c +++ b/ch4/4-12_recursive-itoa.c @@ -25,24 +25,20 @@ void reverse(char[]); int main(void) { char foo[40] = ""; - itoa(829048, foo); printf("%s\n", foo); itoa(-4021, foo); printf("%s\n", foo); - return 0; } void itoa(int num, char target[]) { static int i = 0; static int neg = 0; - if (num < 0) { neg = 1; num = -num; } - if (num /= 10 > 0) { target[i++] = (num % 10) + '0'; num /= 10; @@ -63,8 +59,7 @@ void itoa(int num, char target[]) { void reverse(char s[]) { int c, i, j; - - for (i = 0, j = strlen(s)-1; i < j; i++, j--) { + for (i = 0, j = strlen(s) - 1; i < j; i++, j--) { c = s[i]; s[i] = s[j]; s[j] = c; diff --git a/ch4/4-13_recursive-reverse.c b/ch4/4-13_recursive-reverse.c index 85a5b91..6fffad3 100644 --- a/ch4/4-13_recursive-reverse.c +++ b/ch4/4-13_recursive-reverse.c @@ -29,11 +29,9 @@ void reverse(char s[]) { static int i = 0; static int j = 0; int c; - if (j == 0) { j = strlen(s) - 1; } - if (i < j) { c = s[i]; s[i] = s[j]; diff --git a/ch4/4-14_swap-macro.c b/ch4/4-14_swap-macro.c index ac2f102..7e794d4 100644 --- a/ch4/4-14_swap-macro.c +++ b/ch4/4-14_swap-macro.c @@ -22,7 +22,6 @@ int main() { int a = 3; int b = 7; - printf("a is %d, b is %d\n", a, b); swap(int, a, b); printf("Now swap, and... a is %d and b is %d!\n", a, b); diff --git a/ch5/5-01_getint-fixed.c b/ch5/5-01_getint-fixed.c index b013f20..641251f 100644 --- a/ch5/5-01_getint-fixed.c +++ b/ch5/5-01_getint-fixed.c @@ -29,7 +29,6 @@ int main() { int getint(int *pn) { int c, sign; - while (isspace(c = getch())) { } if (!isdigit(c) && c != EOF && c != '+' && c != '-') { diff --git a/ch5/5-02_getfloat.c b/ch5/5-02_getfloat.c index e6f3347..b125976 100644 --- a/ch5/5-02_getfloat.c +++ b/ch5/5-02_getfloat.c @@ -32,7 +32,6 @@ int main() { int getfloat(double *pn) { int c, sign, places; - while (isspace(c = getch())) { } if (!isdigit(c) && c != EOF && c != '+' && c != '-') { diff --git a/ch5/5-06_pointer-funcs.c b/ch5/5-06_pointer-funcs.c index 7947ba6..a64a0fe 100644 --- a/ch5/5-06_pointer-funcs.c +++ b/ch5/5-06_pointer-funcs.c @@ -60,7 +60,7 @@ void reverse(char *s) { int get_line(char *s, int lim) { int c, i; - for (i = 0; i < lim - 1 && (c=getchar()) != EOF && c != '\n'; ++i) { + for (i = 0; i < lim - 1 && (c = getchar()) != EOF && c != '\n'; ++i) { *s++ = c; } if (c == '\n') { diff --git a/ch5/5-08_error-checking.c b/ch5/5-08_error-checking.c index 61c15c7..b1bc5e7 100644 --- a/ch5/5-08_error-checking.c +++ b/ch5/5-08_error-checking.c @@ -19,7 +19,6 @@ int main() { int m, d, doy; m = d = 0; doy = 0; - printf("Calling day_of_year(1973, 10, 32)\n> "); if ((doy = day_of_year(1973, 10, 32)) > 0) { printf("Oct 12nd, 1973 is day %d\n", doy); @@ -52,7 +51,6 @@ int main() { int day_of_year(int year, int month, int day) { int i, leap; leap = (year % 4 == 0 && year % 100 != 0) || year % 400 == 0; - if (month < 1 || month > 12) { return -1; } @@ -68,7 +66,6 @@ int day_of_year(int year, int month, int day) { void month_day(int year, int yearday, int *pmonth, int *pday) { int i, leap; leap = (year % 4 == 0 && year % 100 != 0) || year % 400 == 0; - // Check for edge case if (yearday > 365 + leap || yearday < 1) { *pmonth = 0; // Set to zero so the error is obvious diff --git a/ch5/5-09_yearday-pointers.c b/ch5/5-09_yearday-pointers.c index 7a28f88..df7197d 100644 --- a/ch5/5-09_yearday-pointers.c +++ b/ch5/5-09_yearday-pointers.c @@ -22,7 +22,6 @@ int main() { }; m = d = 0; doy = 0; - // It said nothing about avoiding indexing in main()! for (i = 0; i < 3; i++) { doy = day_of_year(tvals[i][0], tvals[i][1], tvals[i][2]); @@ -40,7 +39,6 @@ int main() { int day_of_year(int year, int month, int day) { int i, leap; leap = (year % 4 == 0 && year % 100 != 0) || year % 400 == 0; - if (month < 1 || month > 12) { return -1; } @@ -50,7 +48,7 @@ int day_of_year(int year, int month, int day) { } for (i = 1; i < month; i++) { // here, too - day += *(daytab + i) + ((i ==2) ? leap : 0); + day += *(daytab + i) + ((i == 2) ? leap : 0); } return day; } @@ -58,7 +56,6 @@ int day_of_year(int year, int month, int day) { void month_day(int year, int yearday, int *pmonth, int *pday) { int i, leap; leap = (year % 4 == 0 && year % 100 != 0) || year % 400 == 0; - if (yearday > 365 + leap || yearday < 1) { *pmonth = 0; *pday = 0; diff --git a/ch5/5-10_expr.c b/ch5/5-10_expr.c index cc88838..acaabca 100644 --- a/ch5/5-10_expr.c +++ b/ch5/5-10_expr.c @@ -27,7 +27,7 @@ double pop(void); * calculator. Note that for most shells, you'll need to escape the * multiplication symbol (*) or it will expand to every file in the current * directory; NOT what you want in this situation. :) - * + * * So if you want 6 × 8 for example, you'll need to type `6 8 \*` */ int main(int argc, char *argv[]) { @@ -35,7 +35,7 @@ int main(int argc, char *argv[]) { double op2; for (argp = 1; argp < argc; argp++) { int argtype = opt_type(argv[argp]); - switch(argtype) { + switch (argtype) { case '*': push(pop() * pop()); break; @@ -80,7 +80,7 @@ double pop(void) { int opt_type(char op[]) { int i = 0; - switch(op[i]) { + switch (op[i]) { case '*': return '*'; case '+': @@ -88,12 +88,11 @@ int opt_type(char op[]) { case '/': return '/'; case '-': - if (op[i+1] == '\0') { + if (op[i + 1] == '\0') { return '-'; } break; } - while (isdigit(op[i])) { i++; } diff --git a/ch5/5-11_detab-remixed.c b/ch5/5-11_detab-remixed.c index 43bffb4..457d465 100644 --- a/ch5/5-11_detab-remixed.c +++ b/ch5/5-11_detab-remixed.c @@ -12,19 +12,17 @@ int main(int argc, char *argv[]) { int column, c, tabnum, stop; column = 0; - if (argc > 1) { tabnum = 1; stop = atoi(argv[tabnum]); } else { tabnum = 0; } - while ((c = getchar()) != EOF) { if (c == '\t') { if (argc > 1) { // advance the argument if we're ahead of the last one - if (column > stop && tabnum < (argc -1)) { + if (column > stop && tabnum < (argc - 1)) { stop = atoi(argv[++tabnum]); } // insert our spaces up to the tabstop @@ -56,6 +54,5 @@ int main(int argc, char *argv[]) { column++; } } - return 0; } diff --git a/ch5/5-11_entab-remixed.c b/ch5/5-11_entab-remixed.c index 8f6f7d4..d517365 100644 --- a/ch5/5-11_entab-remixed.c +++ b/ch5/5-11_entab-remixed.c @@ -21,17 +21,14 @@ int main(int argc, char *argv[]) { int column, c, spaces, tabnum, stop; spaces = column = 0; - if (argc > 1) { tabnum = 1; stop = atoi(argv[tabnum]); } else { tabnum = 0; } - while ((c = getchar()) != EOF) { column++; - if (c == ' ') { spaces++; if (argc > 1) { @@ -43,11 +40,11 @@ int main(int argc, char *argv[]) { putchar('\t'); spaces = 0; } - } else if (column > stop && tabnum < (argc -1)) { + } else if (column > stop && tabnum < (argc - 1)) { stop = atoi(argv[++tabnum]); } } else { - // we need to do default tabstopping + // we need to do default tabstopping if (column % TABWIDTH == 0 && spaces > 1) { putchar('\t'); spaces = 0; @@ -71,6 +68,5 @@ int main(int argc, char *argv[]) { putchar(c); } } - return 0; } diff --git a/ch5/5-12_detab-spec.c b/ch5/5-12_detab-spec.c index ba22619..84f81d5 100644 --- a/ch5/5-12_detab-spec.c +++ b/ch5/5-12_detab-spec.c @@ -16,7 +16,6 @@ int main(int argc, char *argv[]) { int tabevery = (-1); char arg[4]; column = 0; - if (argc > 1) { int i = 1; int j = 0; @@ -47,10 +46,8 @@ int main(int argc, char *argv[]) { if (tabevery == -1) { tabevery = DEFAULTTAB; } - while ((c = getchar()) != EOF) { column++; - if (c == '\t') { /* No point in processing our tabs until we're after the offset */ if (column > tabstart) { @@ -70,6 +67,5 @@ int main(int argc, char *argv[]) { putchar(c); } } - return 0; } diff --git a/ch5/5-12_entab-spec.c b/ch5/5-12_entab-spec.c index c1f3f6b..d551f66 100644 --- a/ch5/5-12_entab-spec.c +++ b/ch5/5-12_entab-spec.c @@ -17,7 +17,6 @@ int main(int argc, char *argv[]) { int tabevery = (-1); char arg[4]; spaces = column = 0; - if (argc > 1) { int i = 1; int j = 0; @@ -48,10 +47,8 @@ int main(int argc, char *argv[]) { if (tabevery == -1) { tabevery = DEFAULTTAB; } - while ((c = getchar()) != EOF) { column++; - if (c == ' ') { /* No point in starting our tabs until we're after the offset */ if (column > tabstart) { @@ -77,6 +74,5 @@ int main(int argc, char *argv[]) { putchar(c); } } - return 0; } diff --git a/ch5/5-13_tail.c b/ch5/5-13_tail.c index 3a8ea30..642c7c5 100644 --- a/ch5/5-13_tail.c +++ b/ch5/5-13_tail.c @@ -54,7 +54,7 @@ int readlines(char *lineptr[], int maxlines) { if (nlines >= maxlines || (p = alloc(len)) == NULL) { return -1; } else { - line[len-1] = '\0'; + line[len - 1] = '\0'; strcpy(p, line); lineptr[nlines++] = p; } @@ -90,7 +90,6 @@ void parse_args(int argc, char *argv[]) { int main(int argc, char *argv[]) { int nlines; parse_args(argc, argv); - if ((nlines = readlines(lineptr, MAXLINES)) >= 0) { writelines(lineptr, nlines - numlines, nlines); return 0; diff --git a/ch5/5-14_rsort.c b/ch5/5-14_rsort.c index b39a20c..5b19e6d 100644 --- a/ch5/5-14_rsort.c +++ b/ch5/5-14_rsort.c @@ -29,7 +29,6 @@ int numcmp(const char *, const char *); void my_qsort(void *v[], int left, int right, int (*comp)(const char *, const char *)) { int i, last; void swap(void *v[], int, int); - if (left >= right) { return; } @@ -47,7 +46,6 @@ void my_qsort(void *v[], int left, int right, int (*comp)(const char *, const ch int numcmp(const char *s1, const char *s2) { double v1, v2; - v1 = atof(s1); v2 = atof(s2); if (v1 < v2) { @@ -61,7 +59,6 @@ int numcmp(const char *s1, const char *s2) { void swap(void *v[], int i, int j) { void *temp; - temp = v[i]; v[i] = v[j]; v[j] = temp; @@ -75,7 +72,7 @@ int readlines(char *lineptr[], int maxlines) { if (nlines >= maxlines || (p = alloc(len)) == NULL) { return -1; } else { - line[len-1] = '\0'; + line[len - 1] = '\0'; strcpy(p, line); lineptr[nlines++] = p; } @@ -123,17 +120,16 @@ char *alloc(int n) { } /* sort input lines */ -int main (int argc, char *argv[]) { +int main(int argc, char *argv[]) { int nlines; /* number of input lines read */ int numeric = 0; /* 1 if numeric sort */ int reverse = 0; /* 1 if reverse sort */ - if (argc > 1) { int i, j; for (i = 1, j = 0; --argc; i++) { if (argv[i][j++] == '-') { while (argv[i][j] != '\0') { - switch(argv[i][j]) { + switch (argv[i][j]) { case 'n': numeric = 1; break; diff --git a/ch5/5-15_sort-fold.c b/ch5/5-15_sort-fold.c index 90b567b..90c658f 100644 --- a/ch5/5-15_sort-fold.c +++ b/ch5/5-15_sort-fold.c @@ -31,7 +31,6 @@ int istrcmp(const char *, const char *); void my_qsort(void *v[], int left, int right, int (*comp)(const char *, const char *)) { int i, last; void swap(void *v[], int, int); - if (left >= right) { return; } @@ -49,7 +48,6 @@ void my_qsort(void *v[], int left, int right, int (*comp)(const char *, const ch int numcmp(const char *s1, const char *s2) { double v1, v2; - v1 = atof(s1); v2 = atof(s2); if (v1 < v2) { @@ -63,7 +61,6 @@ int numcmp(const char *s1, const char *s2) { void swap(void *v[], int i, int j) { void *temp; - temp = v[i]; v[i] = v[j]; v[j] = temp; @@ -77,7 +74,7 @@ int readlines(char *lineptr[], int maxlines) { if (nlines >= maxlines || (p = alloc(len)) == NULL) { return -1; } else { - line[len-1] = '\0'; + line[len - 1] = '\0'; strcpy(p, line); lineptr[nlines++] = p; } @@ -104,7 +101,7 @@ void reverse_set(char *lineptr[], int nlines) { /* Ignore character case, then send results to qsort */ int istrcmp(const char *s1, const char *s2) { - for ( ; tolower(*s1) == tolower(*s2); s1++, s2++) { + for (; tolower(*s1) == tolower(*s2); s1++, s2++) { if (*s1 == '\0') { return 0; } @@ -135,18 +132,17 @@ char *alloc(int n) { } /* sort input lines */ -int main (int argc, char *argv[]) { +int main(int argc, char *argv[]) { int nlines; /* number of input lines read */ int numeric = 0; /* 1 if numeric sort */ int reverse = 0; /* 1 if reverse sort */ int fold = 0; /* 1 if folding upper and lower case */ - if (argc > 1) { int i, j; for (i = 1, j = 0; --argc; i++) { if (argv[i][j++] == '-') { while (argv[i][j] != '\0') { - switch(argv[i][j]) { + switch (argv[i][j]) { case 'n': numeric = 1; break; diff --git a/ch5/5-16_dir-order.c b/ch5/5-16_dir-order.c index 4610ea6..2952e23 100644 --- a/ch5/5-16_dir-order.c +++ b/ch5/5-16_dir-order.c @@ -49,7 +49,6 @@ int mygetline(char *line, int lim) { void my_qsort(void *v[], int left, int right, int (*comp)(const char *, const char *)) { int i, last; void swap(void *v[], int, int); - if (left >= right) { return; } @@ -67,7 +66,6 @@ void my_qsort(void *v[], int left, int right, int (*comp)(const char *, const ch int numcmp(const char *s1, const char *s2) { double v1, v2; - v1 = atof(s1); v2 = atof(s2); if (v1 < v2) { @@ -81,7 +79,6 @@ int numcmp(const char *s1, const char *s2) { void swap(void *v[], int i, int j) { void *temp; - temp = v[i]; v[i] = v[j]; v[j] = temp; @@ -95,7 +92,7 @@ int readlines(char *lineptr[], int maxlines) { if (nlines >= maxlines || (p = alloc(len)) == NULL) { return -1; } else { - line[len-1] = '\0'; + line[len - 1] = '\0'; strcpy(p, line); lineptr[nlines++] = p; } @@ -160,13 +157,12 @@ char *alloc(int n) { /* sort input lines */ int main(int argc, char *argv[]) { int nlines; /* number of input lines read */ - if (argc > 1) { int i, j; for (i = 1, j = 0; --argc; i++) { if (argv[i][j++] == '-') { while (argv[i][j] != '\0') { - switch(argv[i][j]) { + switch (argv[i][j]) { case 'n': numeric = 1; break; diff --git a/ch5/5-17_field-sort.c b/ch5/5-17_field-sort.c index c086053..078b347 100644 --- a/ch5/5-17_field-sort.c +++ b/ch5/5-17_field-sort.c @@ -64,7 +64,6 @@ int mygetline(char *line, int lim) { void my_qsort(void *v[], int left, int right, int (*comp)(const char *, const char *)) { int i, last; void swap(void *v[], int, int); - if (left >= right) { return; } @@ -108,7 +107,7 @@ int readlines(char *lineptr[], int maxlines) { if (nlines >= maxlines || (p = alloc(len)) == NULL) { return -1; } else { - line[len-1] = '\0'; + line[len - 1] = '\0'; strcpy(p, line); lineptr[nlines++] = p; } @@ -170,8 +169,8 @@ int field_start(const char *s, int fieldnum) { if (s[i] == DELIMITER) { fieldnum--; if (fieldnum == 0) { - if (s[i+1] != '\0') { - return i+1; + if (s[i + 1] != '\0') { + return i + 1; } } } @@ -227,7 +226,7 @@ int main(int argc, char *argv[]) { for (i = 1, j = 0; --argc; i++) { if (argv[i][j++] == '-') { while (argv[i][j] != '\0') { - switch(argv[i][j]) { + switch (argv[i][j]) { case 'n': numeric = 1; break; diff --git a/ch5/5-18_dcl-error-recovery.c b/ch5/5-18_dcl-error-recovery.c index 9a22764..03a7e3c 100644 --- a/ch5/5-18_dcl-error-recovery.c +++ b/ch5/5-18_dcl-error-recovery.c @@ -80,7 +80,7 @@ int gettoken(void) { bufp++; } if (buf[bufp] == '/') { - if (buf[bufp+1] == '/' || buf[bufp+1] == '*') { + if (buf[bufp + 1] == '/' || buf[bufp + 1] == '*') { while (buf[bufp] != '\n') { bufp++; } @@ -130,7 +130,7 @@ int gettoken(void) { */ int get_line(char *s, int lim) { int c, i; - for (i = 0; i < lim - 1 && (c=getchar()) != EOF && c != '\n'; ++i) { + for (i = 0; i < lim - 1 && (c = getchar()) != EOF && c != '\n'; ++i) { *s++ = c; } if (c == '\n') { diff --git a/ch5/5-19_undcl-no-redundant-parens.c b/ch5/5-19_undcl-no-redundant-parens.c index 4af4314..44d5f38 100644 --- a/ch5/5-19_undcl-no-redundant-parens.c +++ b/ch5/5-19_undcl-no-redundant-parens.c @@ -44,12 +44,12 @@ int gettoken(void) { return tokentype = '('; } } else if (c == '[') { - for (*p++ = c; (*p++ = getch()) != ']'; ) { + for (*p++ = c; (*p++ = getch()) != ']';) { } *p = '\0'; return tokentype = BRACKETS; } else if (isalpha(c)) { - for (*p++ = c; isalnum(c = getch()); ) { + for (*p++ = c; isalnum(c = getch());) { *p++ = c; } *p = '\0'; diff --git a/ch5/5-20_expanded-dcl.c b/ch5/5-20_expanded-dcl.c index d7d4c5c..a30fa3e 100644 --- a/ch5/5-20_expanded-dcl.c +++ b/ch5/5-20_expanded-dcl.c @@ -107,7 +107,7 @@ int gettoken(void) { bufp++; } if (buf[bufp] == '/') { - if (buf[bufp+1] == '/' || buf[bufp+1] == '*') { + if (buf[bufp + 1] == '/' || buf[bufp + 1] == '*') { while (buf[bufp] != '\n') { bufp++; } @@ -167,7 +167,7 @@ int gettoken(void) { */ int get_line(char *s, int lim) { int c, i; - for (i = 0; i < lim - 1 && (c=getchar()) != EOF && c != '\n'; ++i) { + for (i = 0; i < lim - 1 && (c = getchar()) != EOF && c != '\n'; ++i) { *s++ = c; } if (c == '\n') { diff --git a/ch6/6-01_getword-enhanced.c b/ch6/6-01_getword-enhanced.c index c040d1e..7e2777e 100644 --- a/ch6/6-01_getword-enhanced.c +++ b/ch6/6-01_getword-enhanced.c @@ -159,7 +159,7 @@ int getword(char *word, int lim) { *w = '\0'; return c; } - for ( ; --lim > 0; w++) { + for (; --lim > 0; w++) { if (!isalnum(*w = getch()) && *w != '_') { ungetch(*w); break; diff --git a/ch6/6-02_common-prefix-printer.c b/ch6/6-02_common-prefix-printer.c index fedb389..f5314d7 100644 --- a/ch6/6-02_common-prefix-printer.c +++ b/ch6/6-02_common-prefix-printer.c @@ -53,7 +53,7 @@ struct tnode *addtree(struct tnode *, char *); void treeprint(struct tnode *, int); struct tnode *talloc(void); char *mystrdup(char *); -int check_prefix(char *, char*, int); +int check_prefix(char *, char *, int); int main(int argc, char *argv[]) { switch (argc) { @@ -130,7 +130,7 @@ int getword(char *word, int lim) { *w = '\0'; return c; } - for ( ; --lim > 0; w++) { + for (; --lim > 0; w++) { if (!isalnum(*w = getch()) && *w != '_') { ungetch(*w); break; @@ -146,7 +146,7 @@ struct key *binsearch(char *word, struct key *tab, int n) { struct key *high = &tab[n]; struct key *mid; while (low < high) { - mid = low + (high-low) / 2; + mid = low + (high - low) / 2; if ((cond = strcmp(word, mid->word)) < 0) { high = mid; } else if (cond > 0) { @@ -231,7 +231,7 @@ struct tnode *talloc(void) { char *mystrdup(char *s) { char *p; - p = (char *) malloc(strlen(s)+1); + p = (char *) malloc(strlen(s) + 1); if (p != NULL) { strcpy(p , s); } diff --git a/ch6/6-03_line_location.c b/ch6/6-03_line_location.c index 9a22c81..52c1782 100644 --- a/ch6/6-03_line_location.c +++ b/ch6/6-03_line_location.c @@ -93,7 +93,7 @@ int getword(char *word, int lim) { if (c != EOF) { *w++ = c; } - for ( ; --lim > 0; w++) { + for (; --lim > 0; w++) { if (!isalpha(*w = getch())) { ungetch(*w); break; @@ -182,7 +182,7 @@ struct tlist *lalloc(void) { char *mystrdup(char *s) { char *p; - p = (char *) malloc(strlen(s)+1); + p = (char *) malloc(strlen(s) + 1); if (p != NULL) { strcpy(p , s); } diff --git a/ch6/6-04_top-words.c b/ch6/6-04_top-words.c index 796dac1..784a950 100644 --- a/ch6/6-04_top-words.c +++ b/ch6/6-04_top-words.c @@ -114,7 +114,7 @@ int getword(char *word, int lim) { if (c != EOF) { *w++ = c; } - for ( ; --lim > 0; w++) { + for (; --lim > 0; w++) { if (!isalpha(*w = getch())) { ungetch(*w); break; @@ -169,7 +169,7 @@ struct tnode *talloc(void) { char *mystrdup(char *s) { char *p; - p = (char *) malloc(strlen(s)+1); + p = (char *) malloc(strlen(s) + 1); if (p != NULL) { strcpy(p , s); } diff --git a/ch6/6-05_undef.c b/ch6/6-05_undef.c index d65f435..40ac87e 100644 --- a/ch6/6-05_undef.c +++ b/ch6/6-05_undef.c @@ -79,7 +79,7 @@ struct nlist *install(char *name, char *defn) { np->next = hashtab[hashval]; hashtab[hashval] = np; } else { - free ((void *) np->defn); + free((void *) np->defn); } if ((np->defn = strdup(defn)) == NULL) { return NULL; diff --git a/ch6/6-06_define-processor.c b/ch6/6-06_define-processor.c index d26ddbc..e24f173 100644 --- a/ch6/6-06_define-processor.c +++ b/ch6/6-06_define-processor.c @@ -115,7 +115,7 @@ struct nlist *install(char *name, char *defn) { np->next = hashtab[hashval]; hashtab[hashval] = np; } else { - free ((void *) np->defn); + free((void *) np->defn); } if ((np->defn = strdup(defn)) == NULL) { return NULL; @@ -188,7 +188,7 @@ int getword(char *word, int lim) { *w = '\0'; return c; } - for ( ; --lim > 0; w++) { + for (; --lim > 0; w++) { if (!isalnum(*w = getch())) { ungetch(*w); break; diff --git a/ch7/7-01_upper-lower.c b/ch7/7-01_upper-lower.c index 2f641c1..047c83c 100644 --- a/ch7/7-01_upper-lower.c +++ b/ch7/7-01_upper-lower.c @@ -26,12 +26,12 @@ int main(int argc, char *argv[]) { plow = strstr(argv[0], "lower"); pupp = strstr(argv[0], "upper"); if (plow != NULL) { - lpos = (int) (plow - argv[0]); + lpos = (int)(plow - argv[0]); } else { lpos = -1; } if (pupp != NULL) { - upos = (int) (pupp - argv[0]); + upos = (int)(pupp - argv[0]); } else { upos = -1; } |