函数指针

 

#include <cstdio>
#include <iostream>
using namespace std;
int max(int x,int y)
{
    return x>y?x:y;
}
int main()
{
    int max(int,int);
    int (*p)(int ,int) = &max;    
    int c = (*p)(2,3);
    printf("the max is %d",c);
}