c++ 重载类型转换运算符

1重载类型转换运算符.cpp

#include<iostream>using namespace std;class A{    public:    int m=0;    A()=default;    A(int k){m=k;}    ~A(){}    operator int()    {        return m;    }    operator double()    {        return m;    }};int main(){//  A a(100);   //直接初始化    A a =100;   //拷贝初始化    cout<<a.m<<endl;//ok:   int n = (int)a +100;//  int n = a +10.11;    int n = a +100;    cout<<n<<endl;}