最近看了一下Effect c++ 想要重新理解一下c++的机制以及内存布局，还是想搞这方面的研究，对底层不明白，总是有点很不踏实。
那就写了一个 Complex 类，这个类还是相对比较全的，基本上涵盖了一些运算。请大神飘过，勿噴，谢谢合作。
Complex.h文件
#ifndef __COMPLEX_H__
#define __COMPLEX_H__
#include <iostream>
#include <string>
using namespace std ;
class Complex{
public:
Complex();
Complex(Complex&);
Complex(double);
Complex(double,double);
Complex& operator = (Complex&);
~Complex();
double getA();
double getB();
void setA(double);
void setB(double);
Complex operator + (double);
Complex operator - (double);
Complex operator * (double);
Complex operator / (double);
Complex& operator += (double);
Complex& operator -= (double);
Complex& operator *= (double);
Complex& operator /= (double);
bool operator == (double);
bool operator == (Complex &c);
Complex operator + (Complex&);
Complex operator - (Complex&);
Complex operator * (Complex&);
Complex operator / (Complex&);
Complex& operator += (Complex&);
Complex& operator -= (Complex&);
Complex& operator *= (Complex&);
Complex& operator /= (Complex&);
private:
double a;
double b;
};
ostream& operator << (ostream &,Complex &);
Complex operator + (double,Complex &);
Complex operator - (double,Complex &);
Complex operator * (double,Complex &);
Complex operator / (double,Complex &);
Complex pow(Complex &,int);
#endif // __COMPLEX_H__
Complex.cpp文件
#include "Complex.h"
Complex::Complex():a(0),b(0){}
Complex::Complex(Complex& c):a(c.getA()),b(c.getB()){}
Complex::Complex(double _a):a(_a),b(0){}
Complex::Complex(double _a,double _b):a(_a),b(_b){}
Complex::~Complex(){};
Complex& Complex::operator = (Complex&c){
this->a = c.getA() ;
this->b = c.getB() ;
return *this;
}
double Complex::getA(){
return this->a;
}
double Complex::getB(){
return this->b;
};
void Complex::setA(double _a){
this->a = _a ;
}
void Complex::setB(double _b){
this->b = _b ;
}
bool Complex::operator == (double a){
Complex c(a);
return *this == c ;
}
bool Complex::operator == (Complex &c){
if(this->a == c.getA() && this->b == c.getB())return true;
return false;
}
Complex& Complex::operator += (Complex&c){
this->a += c.getA() ;
this->b += c.getB() ;
return *this;
}
Complex& Complex::operator -= (Complex&c){
this->a -= c.getA() ;
this->b -= c.getB() ;
return *this;
}
Complex& Complex::operator *= (Complex&c){
this->a = ((this->a)*(c.getA()) - (this->b)*(c.getB()));
this->b = ((this->a)*(c.getB()) + (this->b)*(c.getA()));
return *this;
}
Complex& Complex::operator /= (Complex&c){
if(c == 0)throw "error" ;
else {
*this = (*this) / c ;
}
return *this;
}
Complex& Complex::operator += (double a){
Complex r(a) ;
*this+=r;
return *this;
}
Complex& Complex::operator -= (double a){
Complex r(a) ;
*this-=r;
return *this;
}
Complex& Complex::operator *= (double a){
Complex r(a) ;
*this*=r;
return *this;
}
Complex& Complex::operator /= (double a){
Complex r(a) ;
*this/=r;
return *this;
}
Complex Complex::operator + (Complex&c){
Complex r ;
r.setA(this->a + c.getA()) ;
r.setB(this->b + c.getB()) ;
return r ;
}
Complex Complex::operator - (Complex&c){
Complex r ;
r.setA(this->a - c.getA()) ;
r.setB(this->b - c.getB()) ;
return r ;
}
Complex Complex::operator * (Complex&c){
Complex r ;
r.setA(((this->a)*(c.getA()) - (this->b)*(c.getB()))) ;
r.setB(((this->a)*(c.getB()) + (this->b)*(c.getA()))) ;
return r ;
}
Complex Complex::operator / (Complex&c){
Complex r = c;
if(c == 0 )throw "error" ;
double t = c.getA()*c.getA() + c.getB()*c.getB() ;
r.setB(-1*r.getB()) ;
r = ((*this) * r) * (1.0/t) ;
return r;
}
Complex Complex::operator + (double a){
Complex r(a) ;
return (*this)+r;
}
Complex Complex::operator - (double a){
Complex r(a) ;
return (*this)-r;
}
Complex Complex::operator * (double a){
Complex r(a) ;
return (*this)*r;
}
Complex Complex::operator / (double a){
Complex r(a) ;
return (*this)/r;
}
ostream& operator << (ostream &out,Complex &c){
double a = c.getA() ;
double b = c.getB() ;
if(a == 0 )
{
if(b==0)out<<0;
else out<<b<<"i";
}
else if(b==0)out<<a;
else if(b>0)out<<a<<"+"<<b<<"i";
else out<<a<<b<<"i";
return out;
}
Complex operator + (double a,Complex &c){
Complex r(a) ;
return r+c;
}
Complex operator - (double a,Complex &c){
Complex r(a) ;
return r-c;
}
Complex operator * (double a,Complex &c){
Complex r(a) ;
return r*c;
}
Complex operator / (double a,Complex &c){
Complex r(a) ;
return r/c;
}
Main.cpp文件
#include <iostream>
#include "Complex.h"
using namespace std;
int main()
{
Complex a(1,2);
Complex b(2,3);
cout<<a+b<<endl;
cout<<a-b<<endl;
cout<<a*b<<endl;
cout<<a/b<<endl;
cout<<a+b-a*b/a<<endl;
return 0;
}
测试结果：
可能写的仓促，没有想到的功能。逐渐完善。