chomp

chomp.c

/*
 * A C implementation that mimics Perl's 'chomp' functionality.
 * Reads from standard input and outputs all characters except the trailing newline.
 * Preserves internal newlines but removes only the final newline if present.
 * Compile with: gcc -O2 -o chomp chomp.c
 */

#include <stdio.h>

int main(void) {
    int c, prev_c = EOF;
    
    /* Read character by character from stdin */
    while ((c = getchar()) != EOF) {
        /* If we have a previous character, output it */
        if (prev_c != EOF) {
            putchar(prev_c);
        }
        prev_c = c;
    }
    
    /* Output the last character only if it's not a newline */
    if (prev_c != EOF && prev_c != '\n') {
        putchar(prev_c);
    }
    
    return 0;
}