在C++环境中使用类模板出现的问题-请大家解决一下
下面的程序在C++6.0环境运行时有五个错误，都发生在成员函数定义上，请大家帮忙解决一下，雷某在这里先谢谢大家了！
#include <iostream>
using namespace std;
template <class numtype>
class Complex
{
public:
Complex( ){real=0;imag=0;}
Complex(numtype r,numtype i){real=r;imag=i;}
Complex complex_add(Complex &c2);
Complex complex_jian(Complex &c2);
Complex complex_cheng(Complex &c2);
Complex complex_chu(Complex &c2);
void display( );
private:
numtype real;
numtype imag;
};
template <class numtype>
Complex Complex<numtype>::complex_add(Complex &c2)
{
Complex c;
c.real=real+c2.real;
c.imag=imag+c2.imag;
return c;
}
template <class numtype>
Complex Complex<numtype>::complex_jian(Complex &c2)
{
Complex c;
c.real=real-c2.real;
c.imag=imag-c2.imag;
return c;
}
template <class numtype>
Complex Complex<numtype>::complex_cheng(Complex &c2)
{
Complex c;
c.real=real*c2.real-imag*c2.imag;
c.imag=real*c2.imag+imag*c2.real;
return c;
}
template <class numtype>
Complex Complex<numtype>::complex_chu(Complex &c2)
{
Complex c,c3,c4;
c3.real=c2.real;
c3.imag=c2.imag;

c.real=real*c3.real-imag*c3.imag;
c.imag=real*c3.imag+imag*c3.real;
c4.real=c2.real*c2.real-c2.imag*c3.imag;
c.real=c.real/c4.real;
c.imag=c.image/c4.real;
return c;
}
template <class numtype>
void Complex<numtype>::display( )
{
cout<<"("<<real<<","<<imag<<"i)"<<endl;
}
int main( )
{
Complex<int> c1(3,4),c2(5,-10),c3;
c3=c1.complex_add(c2);
cout<<"c1+c2=";
c3.display( );
Complex<double> c4(3.1,4.4),c5(5.34,-10.21),c6;
c6=c4.complex_jian(c5);
cout<<"c4+c5=";
c6.display( );

Complex<int> c7(3.1,4.4),c8(5.34,-10.21),c9;
c9=c7.complex_cheng(c8);
cout<<"c7*c8=";
c9.display( );

Complex<double> c10(3.1,4.4),c11(5.34,-10.21),c12;
c12=c10.complex_chu(c11);
cout<<"c10/c11=";
c12.display( );
system("pause");
return 0;
}



[解决办法]
你都没定义赋值构造函数
Complex Complex<numtype>::complex_add(Complex &c2)
{
Complex c;
c.real=real+c2.real;
c.imag=imag+c2.imag;
return c;
}
这个定义肯定错了。
[解决办法]
Complex Complex<numtype>::complex_jian(Complex &c2)
{
Complex c;
c.real=real-c2.real;
c.imag=imag-c2.imag;
return c;
}
template <class numtype>
Complex Complex<numtype>::complex_cheng(Complex &c2)
{
Complex c;
c.real=real*c2.real-imag*c2.imag;
c.imag=real*c2.imag+imag*c2.real;
return c;
}
template <class numtype>
Complex Complex<numtype>::complex_chu(Complex &c2)
{
Complex c,c3,c4;
c3.real=c2.real;
c3.imag=c2.imag;

c.real=real*c3.real-imag*c3.imag;
c.imag=real*c3.imag+imag*c3.real;
c4.real=c2.real*c2.real-c2.imag*c3.imag;
c.real=c.real/c4.real;
c.imag=c.image/c4.real;
return c;
}
这几个都有问题
[解决办法]

C/C++ code

template <class numtype>class Complex   {public:Complex( ){real=0;imag=0;}   Complex(numtype r,numtype i){real=r;imag=i;}  Complex complex_add(Complex &c2);  Complex complex_jian(Complex &c2);  Complex complex_cheng(Complex &c2);  Complex complex_chu(Complex &c2);  void display( );   private:numtype real;  numtype imag;  };template <class numtype>Complex<numtype> Complex<numtype>::complex_add(Complex &c2){Complex<numtype> c;c.real=real+c2.real;c.imag=imag+c2.imag;return c;}  template <class numtype>Complex<numtype> Complex<numtype>::complex_jian(Complex &c2){Complex c;c.real=real-c2.real;c.imag=imag-c2.imag;return c;}template <class numtype>Complex<numtype> Complex<numtype>::complex_cheng(Complex &c2){Complex c;c.real=real*c2.real-imag*c2.imag;c.imag=real*c2.imag+imag*c2.real;return c;}  template <class numtype>Complex<numtype> Complex<numtype>::complex_chu(Complex &c2){Complex<numtype>  c,c3,c4;c3.real=c2.real;c3.imag=c2.imag;c.real=real*c3.real-imag*c3.imag;c.imag=real*c3.imag+imag*c3.real;c4.real=c2.real*c2.real-c2.imag*c3.imag;c.real=c.real/c4.real;c.imag=c.imag/c4.real;return c;}   template <class numtype>   void Complex<numtype>::display( )   {cout<<"("<<real<<","<<imag<<"i)"<<endl;}int main( ){ Complex<int> c1(3,4);Complex<int>c2(5,-10);Complex<int>c3;   c3=c1.complex_add(c2);   cout<<"c1+c2=";  c3.display( );   Complex<double> c4(3.1,4.4);Complex<double>c5(5.34,-10.21);Complex<double>c6;   c6=c4.complex_jian(c5);   cout<<"c4+c5=";  c6.display( );  Complex<double> c7(3.1,4.4);Complex<double> c8(5.34,-10.21);Complex<double> c9;   c9=c7.complex_cheng(c8);   cout<<"c7*c8=";  c9.display( );  Complex<double> c10(3.1,4.4);Complex<double> c11(5.34,-10.21);Complex<double> c12;   c12=c10.complex_chu(c11);   cout<<"c10/c11=";  c12.display( );      system("pause");    return 0;} 
 
[解决办法]
C/C++ code
template <class numtype>Complex<numtype> Complex<numtype>::complex_add(const Complex<numtype> &c2){Complex<numtype> c;c.real=real+c2.real;c.imag=imag+c2.imag;return c;}
[解决办法]
C/C++ code
#include <iostream>using namespace std;template <class numtype>class Complex   {public:    Complex( ){real=0;imag=0;}       Complex(numtype r,numtype i){real=r;imag=i;}      void operator = (Complex c2);//赋值    Complex<numtype> complex_add(Complex &c2);      Complex<numtype> complex_jian(Complex &c2);      Complex<numtype> complex_cheng(Complex &c2);      Complex<numtype> complex_chu(Complex &c2);      void display( );   private:    numtype real;      numtype imag;  };template <class numtype>void Complex<numtype>::operator = (Complex c2){    real=c2.real;    imag=c2.imag;} template <class numtype>Complex<numtype> Complex<numtype>::complex_add(Complex &c2){    real+=c2.real;    imag+=c2.imag;    return *this;}  template <class numtype>Complex<numtype> Complex<numtype>::complex_jian(Complex &c2){    Complex c;    c.real=real-c2.real;    c.imag=imag-c2.imag;    return c;}template <class numtype>Complex<numtype> Complex<numtype>::complex_cheng(Complex &c2){    Complex c;    c.real=real*c2.real-imag*c2.imag;    c.imag=real*c2.imag+imag*c2.real;    return c;}  template <class numtype>Complex<numtype> Complex<numtype>::complex_chu(Complex &c2){    Complex c,c3,c4;    c3.real=c2.real;    c3.imag=c2.imag;        c.real=real*c3.real-imag*c3.imag;    c.imag=real*c3.imag+imag*c3.real;    c4.real=c2.real*c2.real-c2.imag*c3.imag;    c.real=c.real/c4.real;    c.imag=c.imag/c4.real;    return c;}   template <class numtype>   void Complex<numtype>::display( )   {    cout<<"("<<real<<","<<imag<<"i)"<<endl;}int main( ){     Complex<int> c1(3,4),c2(5,-10),c3;       c3=c1.complex_add(c2);       cout<<"c1+c2=";      c3.display( );       Complex<double> c4(3.1,4.4),c5(5.34,-10.21),c6;       c6=c4.complex_jian(c5);       cout<<"c4+c5=";      c6.display( );          Complex<int> c7(3.1,4.4),c8(5.34,-10.21),c9;       c9=c7.complex_cheng(c8);       cout<<"c7*c8=";      c9.display( );          Complex<double> c10(3.1,4.4),c11(5.34,-10.21),c12;       c12=c10.complex_chu(c11);       cout<<"c10/c11=";      c12.display( );      system("pause");    return 0;}