复数模板类2

#include<iostream>
using namespace std;
template<class t>
class Complex
{
public:
    Complex(){real=0;imag=0;}
    Complex(t r, t i){real=r;imag=i;}
    Complex complex_add(Complex &c2);
    Complex complex_minus(Complex &c2);
    Complex complex_mul(Complex &c2);
    Complex complex_div(Complex &c2);
    void display();
private:
   t real;
   t imag;
};
template<class t>
Complex<t> Complex<t>::complex_div(Complex &c2)
{
    Complex<t> c;
    c.real=real/c2.real;
    c.imag=imag/c2.imag;
    return c;
}
template<class t>
Complex<t> Complex<t>::complex_mul(Complex &c2)
{
    Complex<t> c;
    c.real=real*c2.real;
    c.imag=imag*c2.imag;
    return c;
}
template<class t>
Complex<t> Complex<t>::complex_minus(Complex &c2)
{
    Complex<t> c;
    c.real=real-c2.real;
    c.imag=imag-c2.imag;
    return c;
}
template<class t>
Complex<t> Complex<t>::complex_add(Complex &c2)
{
    Complex<t> c;
    c.real=real+c2.real;
    c.imag=imag+c2.imag;
    return c;
}
template<class t>
void Complex<t>::display()
{
    cout<<"("<<real<<","<<imag<<"i"<<")"<<endl;
}
int main( )
{
    Complex<int> c1(3,4),c2(5,-10),c3;
    c3=c1.complex_add(c2);  //调用成员函数支持加法运算，有一个形参
    cout<<"c1+c2=";
    c3.display( );
    Complex<double> c4(3.1,4.4),c5(5.34,-10.21),c6;
    c6=c4.complex_add(c5);  //调用成员函数支持加法运算，有一个形参
    cout<<"c4+c5=";
    c6.display( );
    c3=c1.complex_minus(c2);
    cout<<"c1-c2=";
    c3.display();
    c6=c4.complex_minus(c5);
    cout<<"c4-c5=";
    c6.display();
    c3=c1.complex_mul(c2);
    cout<<"c1*c2=";
    c3.display();
    c6=c4.complex_mul(c5);
    cout<<"c4*c5=";
    c6.display();
    c3=c1.complex_div(c2);
    cout<<"c1/c2=";
    c3.display();
    c6=c4.complex_div(c5);
    cout<<"c4/c5=";
    c6.display();
    return 0;
}