花括号操作符重载
#include <iostream>
using namespace std;
class Square{
public:
double operator()(double x)const{
return x * x;
}
int operator()(int a,int b,int c=0)const{
return a+b-c;
}
};
int main(void){
Square sq;
//括号里面的参数会被自动当作形参传入
cout << sq(12) << endl; //144
cout << sq(1,5,3) << endl; //3
cout << sq(1,3) << endl; //4
return 0;
}