4-1 复数类的运算符重载

4-1 复数类的运算符重载

Time Limit: 1000MS Memory Limit: 65536KB

Submit Statistic

Problem Description

通过本题目的练习可以掌握成员运算符重载及友元运算符重载

要求定义一个复数类，重载加法和减法运算符以适应对复数运算的要求，重载插入运算符(<<)以方便输出一个复数的要求。

Input

 

要求在主函数中创建对象时初始化对象的值。

Output

 

输出数据共有4行，分别代表a，b的值和它们求和、求差后的值

Example Input

无

Example Output

a=3.2+4.5ib=8.9+5.6ia+b=12.1+10.1ia-b=-5.7-1.1i

Hint

 

Author

 黄晶晶

#include<iostream>using namespace std;class Num{public:    void show1();    void show2();    void show3();    void show4();    Num(){a = 0;b = 0;}    Num(double x,double y);    Num sum(Num &p);    Num sul(Num &p);private:    double a,b;};Num::Num(double x,double y){    a = x;    b = y;}Num Num::sum(Num &p){    Num x;    x.a = a + p.a;    x.b = b + p.b;    return x;}Num Num::sul(Num &p){    Num c;    c.a = a - p.a;    c.b = b - p.b;    return c;}void Num::show1(){    cout<<"a="<<a<<"+"<<b<<"i"<<endl;}void Num::show2(){    cout<<"b="<<a<<"+"<<b<<"i"<<endl;}void Num::show3(){    cout<<"a+b="<<a<<"+"<<b<<"i"<<endl;}void Num::show4(){    if(b<0)        b = -b;    cout<<"a-b="<<a<<"-"<<b<<"i"<<endl;}int main(){    Num r1(3.2,4.5),r2(8.9,5.6),r3,r4;    r3 = r1.sum(r2);    r4 = r1.sul(r2);    r1.show1();    r2.show2();    r3.show3();    r4.show4();    return 0;}