#include <stdio.h>
void cal(int x,int y,int *add, int *sub);

int main(void) {
	int x=6, y=3,n1,n2;
	cal(x,y,&n1,&n2);
	printf("和:%d, 差:%d\n",n1,n2);
	
	return 0;
}

void cal(int x,int y,int *add, int *sub){
	*add=x+y;
	*sub=x-y;
}