c_ch01_ex10.c

/*
 * Exercise 1-10.
 * Write a program to copy its input to its output, replacing each
 * tab by \t, each backspace by \b, and each backslash by \\. This
 * makes tabs and backspaces visible in an unambiguous way.
 */

#include <stdio.h>

main() {
	int c;

	while ((c = getchar()) != EOF) {
		if (c == '\t') {
			putchar('\\');
			putchar('t');
		} else if (c == '\b') {
			putchar('\\');
			putchar('b');
		} else if (c == '\\') {
			putchar('\\');
			putchar('\\');
		} else
			putchar(c);
	}
}