C++ 赋值运算符重载
C++ 教程
· 2019-02-26 08:57:16
就像其他运算符一样，您可以重载赋值运算符（ = ），用于创建一个对象，比如拷贝构造函数。
下面的实例演示了如何重载赋值运算符。
实例
#include <iostream>
using namespace std;
class Distance
{
private:
int feet; // 0 到无穷
int inches; // 0 到 12
public:
// 所需的构造函数
Distance(){
feet = 0;
inches = 0;
}
Distance(int f, int i){
feet = f;
inches = i;
}
void operator=(const Distance &D )
{
feet = D.feet;
inches = D.inches;
}
// 显示距离的方法
void displayDistance()
{
cout << "F: " << feet << " I:" << inches << endl;
}
};
int main()
{
Distance D1(11, 10), D2(5, 11);
cout << "First Distance : ";
D1.displayDistance();
cout << "Second Distance :";
D2.displayDistance();
// 使用赋值运算符
D1 = D2;
cout << "First Distance :";
D1.displayDistance();
return 0;
}
当上面的代码被编译和执行时，它会产生下列结果：
First Distance : F: 11 I:10 Second Distance :F: 5 I:11 First Distance :F: 5 I:11
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