第6周项目5复数模板类

来源：互联网发布：离散数学公开课知乎编辑：程序博客网时间：2024/04/30 17:10
#include <iostream>using namespace std;template <class T>class Complex{public:    Complex( )    {        real=0;        imag=0;    }    Complex(T a,T b)    {        real=a;        imag=b;    }    Complex complex_add(Complex &c);    Complex complex_minus(Complex &c);    Complex complex_multiply(Complex &c);    Complex complex_divide(Complex &c);    void display();private:       T real;       T imag;};template <class T>Complex<T> Complex<T>::complex_add(Complex<T> &c){    Complex<T> a;    a.real=real+c.real;    a.imag=imag+c.imag;    return a;}template <class T>Complex<T> Complex<T>::complex_minus(Complex<T> &c){    Complex<T> b;    b.real=real-c.real;    b.imag=imag+c.imag;    return b;}template <class T>Complex<T> Complex<T>::complex_multiply(Complex<T> &c1){    Complex <T> c;    c.real=real*c1.real-imag*c1.imag;    c.imag=imag*c1.real+real*c1.imag;    return c;}template <class T>Complex<T> Complex<T>::complex_divide(Complex<T> &c2){    Complex<T>  c;    T d=c2.real*c2.real+c2.imag*c2.imag;    c.real=(real*c2.real+imag*c2.imag)/d;       //此处有危险未排除：除法溢出    c.imag=(imag*c2.real-real*c2.imag)/d;    return c;}template<class T>void Complex<T>::display(){    cout<<'('<<real<<','<<imag<<')'<<endl;}int main( ){    Complex<int> c1(3,4),c2(5,-10),c3;   //实部和虚部是int型    c3=c1.complex_add(c2);    cout<<"c1+c2=";    c3.display( );    c3=c1.complex_minus(c2);    cout<<"c1-c2=";    c3.display( );    c3=c1.complex_multiply(c2);    cout<<"c1*c2=";    c3.display( );    c3=c1.complex_divide(c2);    cout<<"c1/c2=";    c3.display( );    cout<<endl;    Complex<double> c4(3.1,4.4),c5(5.34,-10.21),c6; //实部和虚部是double型    c6=c4.complex_add(c5);    cout<<"c4+c5=";    c6.display( );    c6=c4.complex_minus(c5);    cout<<"c4-c5=";    c6.display( );    c6=c4.complex_multiply(c5);    cout<<"c4*c5=";    c6.display( );    c6=c4.complex_divide(c5);    cout<<"c4/c5=";    c6.display( );    return 0;}
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