#include <stdio.h>
void call(int x,int y,int *add, int *dif);
int main(void) {
int n1,n2,a,b;
call(n1,n2,&a,&b);
printf("add=%d,dif=%d\n",a
,b
); return 0;
}
call(int x,int y,int *add, int *dif){
*add=x+y;
*dif=x-y;
}
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