自考新教材-p167

源程序：

#include<iostream>
using namespace std;

class myComplex
{
double real,imag;
public:
myComplex(double r=0,double i=0):real(r),imag(i){};
operator double() //重载强制类型转换运算符double
{
return real;
}
};

int main()
{
myComplex c(1.2,-3.4);
cout<<(double)c<<endl;
double n=12+c; //实部相加
cout<<n<<endl;
return 0;
}

运行结果：

自考新教材-p167

原文：https://www.cnblogs.com/duanqibo/p/12259147.html