设计、定义并实现Complex类

设计、定义并实现Complex类

#include<iostream>
#include<math.h>
using namespace std;
class complex{
    public:
        complex(double a=0,double b=0);
        complex(complex &c1);
        void add(complex &c2);
        void show();
    private:
        double real;
        double imaginary;};
        
complex::complex(double a,double b):real(a),imaginary(b)
{if(b!=0)
cout<<a<<"+"<<b<<"i"<<endl;
else
cout<<a<<endl;}


complex::complex(complex &c1):real(c1.real),imaginary(c1.imaginary)
{}

void complex::add(complex &c2)
{real+=c2.real;
imaginary+=c2.imaginary;}

void complex::show()
{cout<<real<<"+"<<imaginary<<"i"<<endl;}

int main()
{complex c1(3,5);
 complex c2(4.5); 
 c1.add(c2);
 c1.show();
 return 0;
}

 

思考：

1.书中要求输入“complex c2=4.5”，但是我只会“complex c2（4.5）”，算是一处美中不足，要是考试肯定要扣分

2.我尝试单独定义一个”complex(double a);”来定义c2，但是结果却是c2输入4.5会报错，一定要按照c2（4.5,0），程序才会运行，报错显示“call of overloaded 'complex(double)' is ambiguous”也就是由于上面定义了“double a，double b”，所以单输入一个“double”的定义过于模糊？