#include <stdio.h>int main() {int c;while((c = getchar()) != -1) {if(c == '\t') {printf("\\t");}else if(c == '\b') {printf("\\b");}else if(c == '\\') {printf("\\\\");}else {putchar(c);}}
}
#include <stdio.h>int main() {int c;while((c = getchar()) != -1) {if(c == '\t') {printf("\\t");}else if(c == '\b') {printf("\\b");}else if(c == '\\') {printf("\\\\");}else {putchar(c);}}
}