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