编辑代码

#include <stdio.h>

int plus(int a,int b){
    return a+b;
}

int minus(int a,int b){
    return a-b;
}

void cal(int (*f)(int , int)){
    printf("%d\n",(*f)(3,7));
}
int main (void) {
    cal(plus);
    cal(minus);
    return 0;
}