complex类

#include<cmath>
using namespace std;
class Complex{
    public:Complex(float a,float b);
           Complex(float n);
           Complex(Complex &m);
           void add(Complex h);
           void show();
           float mod();
    private:float real;
            float imaginary;   
};
Complex::Complex(float a,float b):real(a),imaginary(b){
}
Complex::Complex(float n):real(n),imaginary(0){
}
Complex::Complex(Complex &m):real(m.real),imaginary(m.imaginary){
}
void Complex::add(Complex h){
    real+=h.real;
    imaginary+=h.imaginary;
} 
void Complex::show(){
    cout<<real<<'+' <<imaginary<<'i'<<endl;
}
float Complex::mod(){
    float s;
    s=sqrt(real*real+imaginary*imaginary);
    return s;
}
int main()
{Complex c1(3,5);
 Complex c2(4.5);
 Complex c3(c1);
 c1.add(c2);
 c1.show();
 cout<<c1.mod()<<endl;
 return 0;
}

 总结：

上课的时候没有看懂题目，只知道要有构造函数。不知道c1,c2,c3是什么。现在我知道了c1与complex的关系就像i与int的关系。

 

 ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

 

修改：实现c2=4.5

 

#include<iostream> 
#include<cmath>
using namespace std;
class Complex{
    public:Complex(float a,float b);
           Complex(float n);
           Complex(const Complex &m);
           void add(const Complex &m);
           void show();
           float mod();
    private:float real;
            float imaginary;   
};
Complex::Complex(float a,float b):real(a),imaginary(b){
}
Complex::Complex(float n):real(n),imaginary(0){
}
Complex::Complex(const Complex &m):real(m.real),imaginary(m.imaginary){
}
void Complex::add(const Complex &m){
    real+=m.real;
    imaginary+=m.imaginary;
} 
void Complex::show(){
    cout<<real<<'+' <<imaginary<<'i'<<endl;
}
float Complex::mod(){
    float s;
    s=sqrt(real*real+imaginary*imaginary);
    return s;
}
int main()
{Complex c1(3,5);
 Complex c2=4.5;
 Complex c3(c1);
 c1.add(c2);
 c1.show();
 cout<<c1.mod()<<endl;
 return 0;
}

 

 

 

 

 

 

互评：https://www.cnblogs.com/jzgjzg

          https://www.cnblogs.com/sq102217

         https://www.cnblogs.com/aiwenzhuo