#include <stdio.h>
void cal (int x,int y,int *add,int *sub);
int main(void) {
int n1=3,n2=2,a,s;
cal(n1, n2, &a, &s);
return 0;
}
void cal(int x,int y,int *add,int *sub){
*add = x+y;
*sub = x-y;
}
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