这里是报错的消息


我想是不是创建对象是把"10"看成int形，那么我改为"10F"这样还是不行

Complex(float &,float &);此函数改声明为Complex(float ,float );

定义那里也改一下.

我编译了一下：问题是你说的那个。
但是你有没有看明白：不能把const int 转换为float 还有2楼这位仁兄说的引用问题..

那你就写成10.0这样不就好了啊！

编译器使所有的临时对象自动成为const，你的参数按引用传递，就意味着它取临时对象的地址，就有可能修改临时对象。在参数里加上const就OK。

常数认为是const，可以在申明时加上const，要不在创建对象时传入名字代替10.

#include <iostream.h>

//using namespace std;

class Complex
{private:
float r,i;
public:
Complex operator + (Complex &b);
Complex();
Complex(float ,float );
void show();
};

Complex Complex::operator +(Complex &b)
{Complex temp;
temp.r=r+b.r;
temp.i=i+b.i;
return (temp);
}

Complex::Complex()
{r=0;i=0;}
Complex::Complex(float a, float b)
{r=a;i=b;}
void Complex::show()
{
    if(r<0)cout<<r<<"-"<<i<<"i"<<endl;
    else if(r=0)cout<<r<<endl;
    else cout<<r<<"+"<<i<<endl;
}

int main()
{ Complex c1(10,11),c2(12,13),c3;
  c3=c1+c2;
  c3.show();  
  return 0;
}



可以了

#include <iostream>
using namespace std;


class Complex
{
private:
        float RE_P;//real part
        float IM_P;//imaginary part
public:
        Complex operator + (const Complex &b);
        Complex(){RE_P=0; IM_P=0; }
        Complex(float a,float b ){RE_P=a; IM_P=b; }
        void show()const;
};

Complex Complex::operator +(const Complex &b)
{
    Complex temp;
    temp.RE_P=RE_P+b.RE_P;
    temp.IM_P=IM_P+b.IM_P;
    return temp;
}

void Complex::show()const
{
    if(IM_P==0)
      cout<<RE_P<<endl;
    else if(IM_P<0)
      cout<<RE_P<<IM_P<<"i\n";
    else
      cout<<RE_P<<"+"<<IM_P<<"i\n";
}

int main()
{ Complex c1(10,11),c2(12,13),c3;
  c3=c1+c2;
  c3.show();  
  return 0;
}

你的输出有问题，希望检查下

#include <iostream>

using namespace std;

class Complex
{private:
float r,i;
public:
Complex operator + (Complex &b);
Complex();
Complex(float ,float );
void show();
};

Complex Complex::operator +(Complex &b)
{Complex temp;
temp.r=r+b.r;
temp.i=i+b.i;
return (temp);
}

Complex::Complex()
{r=0;i=0;}
Complex::Complex(float a, float b)
{r=a;i=b;}
void Complex::show()
{if(r<0)cout<<r<<"-"<<i<<"i"<<endl;
else if(r=0)cout<<r<<endl;
else cout<<r<<"+"<<i<<endl;
               }

int main()
{ Complex c1(10,11),c2(12,13),c3;//编译时这里出错了
  c3=c1+c2;
  c3.show();  
  return 0;
}