diff options
Diffstat (limited to 'ch2')
| -rw-r--r-- | ch2/2-01_limits.c | 21 | ||||
| -rw-r--r-- | ch2/2-03_hex-to-int.c | 7 | ||||
| -rw-r--r-- | ch2/2-04_squeeze-v2.c | 13 | ||||
| -rw-r--r-- | ch2/2-05_any-func.c | 3 |
4 files changed, 8 insertions, 36 deletions
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; } |