#include <stdio.h>

int main(){
int a = 0; /*Initializing a as zero; this doesn't matter because getchar is called at the top of the loop */

	while (a != EOF){

		a = getchar();

		if (a == '\b' || a == '\t' || a == '\\'){ /*Test whether the currently selected character is a tab, backspace, or backslash */
			if (a == '\b'){
				printf("\\b");
				continue;
			}
			if (a == '\t'){
				printf("\\t");
				continue;
			} else { /*There are only three possible cases here, and by the time we get here, we've tested two, hence an else statement is more efficient than doing another entire if statement*/
				printf("\\\\");
				continue;
			}
		} else {
			putchar (a);
		}
	}


	return 0;
}