#include <stdio.h>
void cal(int x, int y, int *add, int *sub);
int main(void) {
int a=3, b=5;
int add, sub;
cal(a, b, &add, &sub);
printf( "add=%d sub=%d\n", add
, sub
);
return 0;
}
void cal(int x, int y, int *add, int *sub){
*add= x+y;
*sub= x-y;
}
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