重载函数运算符

演示代码1：

class Test{
public:
    int operator() (int a,int b){
        cout<<"() called"<<a<<" "<<b<<endl;
        return a+b;
    }
};

演示代码2：

#include <iostream>
#include <algorithm>
using namespace std;
class Object{
public:
    void operator()(int* array,int N){
        sort(array,array+N);//调用sort函数进行排序
    }
};

int main(){//测试代码
    int check[]={2,3,4,5,1};
    Object obj;
    obj(check,5);
    for (int i = 0; i <5; ++i) {
        cout<<check[i]<<endl;
    }
}