Week six (class template)

/*
*copyright (c) 2015, College of Computer Science, Yantai University
*all rights reserved.
* File name: Week sixth (class template)

* Wangzhong
* Completion Date: 2015.4.14

* Version Number: v1.0
*
* Problem Description: You can design the complex by technical means of the template class, so that the type of the real and imaginary parts is the actual type specified when the object is defined.
(1) A class member function is required to be defined outside the class.
(2) On this basis, the subtraction, multiplication and division are realized again.

* Input Description:

* Program output:

#include <iostream>using namespace Std;template<class numtype>class Complex{public:complex () {R        eal=0;    imag=0;        } Complex (Numtype r,numtype i) {real=r;    Imag=i;    } Complex Complex_add (Complex &c2);    Complex complex_str (Complex &c2);    Complex Complex_mul (Complex &c2);    Complex Complex_div (Complex &c2); void display ();p rivate:numtype Real,imag;}; Template<class numtype>complex<numtype> Complex<numtype>::complex_add (Complex &c2) {Complex C    ;    C.real=real+c2.real;    C.imag=imag+c2.imag; return c;} Template<class numtype>complex<numtype> complex<numtype>::complex_str (Complex &c2) {Complex C    ;    C.real=real-c2.real;    C.imag=imag-c2.imag; return c;} Template<class numtype>complex<numtype> Complex<numtype>::complex_mul (Complex &c2) {Complex C    ;    C.real=real*c2.real-imag*c2.imag;    C.imag=imag*c2.real+real*c2.imag; Return C;} Template<class numtype>complex<numtype> complex<numtype>::complex_div (Complex &c2) {Complex C    ;    Numtype A;    A=c2.real*c2.real+c2.imag*c2.imag;    C.real= (REAL*C2.REAL+IMAG*C2.IMAG)/A;    c.imag= (IMAG*C2.REAL-REAL*C2.IMAG)/A; return c;} Template<class numtype>void complex<numtype>::d isplay () {cout<< "(" <<real<< "," < <imag<< "i)" &LT;&LT;ENDL;}   int main () {complex<int> C1 (3,4), C2 (5,-10), C3;    The real and imaginary parts are of type int c3=c1.complex_add (C2);    cout<< "c1+c2=";    C3.display (); complex<double> C4 (3.1,4.4), C5 (5.34,-10.21), C6;    The real part and the imaginary part are double type c6=c4.complex_add (C5);    cout<< "c4+c5=";    C6.display ();    The following tests subtract, multiply and divide c3=c1.complex_str (C2);    cout<< "c1-c2=";    C3.display ();    C3=c1.complex_mul (C2);    cout<< "c1*c2=";    C3.display ();    C3=c1.complex_div (C2);    cout<< "c1/c2=";    C3.display (); return 0;}

When I imitate the multiplication, run the results, I found that the plural of multiplication and plus minus is not the same thing, I give depressed, tangled ah

Week six (class template)