#include <stdio.h>
void cal(int x, int y, int*sum, int*diff, int*mul, int *mod);
int main(void) {
int x=4, y=5;
int sum=0, diff=0, mul=0, mod=0;
cal(x,y,&sum,&diff,&mul,&mod);
printf("和:%d,差;%d,積:%d,商:%d",sum
,diff
,mul
,mod
); return 0;
}
void cal(int x, int y, int *sum, int *diff, int *mul, int *mod){
*sum=x+y;
*diff=x-y;
*mul=x*y;
*mod=x/y;
if(*diff<0){
*diff=*diff*-1;
}
}
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