#include <stdio.h>
//練習問題B
  int sum(int x,int y){
  	int b;
  	b=x+y;
  	return b;
  }

int main(void) {
	int l, n = 2, m = 3;
    l = sum(m, n);
    printf("%dと%dの和は%d\n", m,n, l);
	return 0;
}