课堂小练习（complex类）

定义一个复数类Complex，使得下面的代码能够工作：

Complex c1(3,5);     //用复数3+5i初始化c1；

Compex c2=4.5;      //用实数4.5初始化c2

c1.add(c2);              //将c1与c2相加，结果保存在c1中

c1.show();               //将c1输出（这时的结果应该是7.5+5i）

cout<<c1.mod()      //c1.mod()对c1进行取模运算

 #include <iostream>
 #include <cmath>
 using namespace std;

 class Complex{
 public:
     Complex (double real0,double imaginary0);
     Complex (double real0);
     Complex (Complex &C);
     void add(Complex c2);
     void show();
     double mod();
 private:
     double real;
     double imaginary;
     double sreal;
     double simaginary;
 };

 Complex::Complex (double real0,double imaginary0):real(real0),imaginary(imaginary0){
 }

 Complex::Complex (double real0):real(real0),imaginary(){
 }

 Complex::Complex(Complex &c3):real(c3.real),imaginary(c3.imaginary){
 }

 void Complex::add(Complex c2){
     sreal=real+c2.real;
     simaginary=imaginary+c2.imaginary;
 }

 void Complex::show(){
     cout<<sreal<<"+"<<simaginary<<"i"<<endl;
 }

 double Complex::mod(){
     double mod0;
     mod0=sqrt(sreal*sreal+simaginary*simaginary);
     return mod0;
 }

 int main(){
     Complex c1(,);
     Complex c2(4.5);  //这里改为“Complex c2=4.5;”就出错，有没有什么办法呀
     Complex c3(c1);
     c1.add(c2);
     cout << "c1 + c2 = ";
     c1.show();
     cout << "mod = ";
     cout<<c1.mod()<<endl;
     return ;
 }

运行截图

实验二评论链接

https://www.cnblogs.com/zuiyankh/p/10587674.html#4219118

https://www.cnblogs.com/qsxsc/p/10583875.html#4219112

https://www.cnblogs.com/yfwg/p/10594280.html#4219099