C - The C Answer (2nd Edition) - 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>

#define NONBLANK 'a'

/* replace tabs and backspaces with visible characters */
main()
{
	int c;

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

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