#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);
return 0;
}
void cal(int x,int y,int *add, int *sub){
*add=x+y;
*sub=x-y;
}
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