#include<stdio.h>

/* reads n characters and prints them in reverse order. */
void reverse(int n){
	char next;
	if (n == 1) {				/* stopping case */
		scanf("%c", &next);
		printf("%c", next);
   	} else {
		scanf("%c", &next);
		reverse(n-1);
		printf("%c", next);
	}
	return;
}

int main(){
   printf("Enter a string: ");  
   reverse(3);
   printf("\n");
}