例10.8.txt

来自「《C++程序设计(谭浩强)》代码,均按章节分类」· 文本 代码 · 共 27 行

例10.8 在例10.7的基础上，增加重载流提取运算符“>>”，用“cin>>”输入复数，用“cout<<”输出复数。
#include <iostream>
using namespace std;
class Complex
{public:
friend ostream& operator << (ostream&,Complex&);    //声明重载运算符“<<”
friend istream& operator >> (istream&,Complex&);    //声明重载运算符“>>”
private:
double real;
double imag;
};
ostream& operator << (ostream& output,Complex& c)       //定义重载运算符“<<”
{output<<″(″<<c.real<<″+″<<c.imag<<″i)″;
return output;
}
istream& operator >> (istream& input,Complex& c)     //定义重载运算符“>>”
{cout<<″input real part and imaginary part of complex number:″;
input>>c.real>>c.imag;
return input;
}
int main( )
{Complex c1,c2;
cin>>c1>>c2; 
cout<<″c1=″<<c1<<endl; 
cout<<″c2=″<<c2<<endl;
return 0;
}