/* 
 * Program to compute sum of integers from stdin, using recursion.
 */
#include <stdio.h>

int rsum(void);

int main(void) {
	printf("enter integers, anything else to stop:\n");
	int sum = rsum();
	printf("sum = %d\n", sum);
	return 0;
}

int rsum(void) {
	int n;
	if (scanf("%d", &n) == 1) {
		return n + rsum();
	}
	else {
		return 0;
	}
}