diff options
Diffstat (limited to 'ch1/1-17_over-80.c')
-rw-r--r-- | ch1/1-17_over-80.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/ch1/1-17_over-80.c b/ch1/1-17_over-80.c new file mode 100644 index 0000000..53f00ce --- /dev/null +++ b/ch1/1-17_over-80.c @@ -0,0 +1,47 @@ +#include <stdio.h> + +#define MINLENGTH 80 + +int main() { + // 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. + 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'; + printf("%-s", buffer); + len = 0; + longline = 1; + continue; + } + + /* If neither of the above cases are caught, increment our counter and fetch + more data. + */ + ++len; + } + + return 0; +} |