//complex.h
#pragma once
#include <stdio.h>
class Complex
{
public:
Complex()
{
real = 0;
imag = 0;
}
Complex(double real, double imag)
{
this->real = real;
this->imag = imag;
}
Complex operator +(const Complex &c);
Complex operator -(const Complex &c);
Complex operator *(const Complex &c);
Complex operator /(const Complex &c);
friend void print(const Complex &c);
private:
double real;
double imag;
};
class complex
{
public:
complex() { real=imag=0; }
complex(double r, double i)
{
real = r, imag = i;
}
friend complex operator +(const complex &c1, const complex &c2);
friend complex operator -(const complex &c1, const complex &c2);
friend complex operator *(const complex &c1, const complex &c2);
friend complex operator /(const complex &c1, const complex &c2);
friend void display(const complex &c);
private:
double real, imag;
};
class CharArray
{
public:
CharArray(int l)
{
if (l < 1)
{
Buff = NULL;
}
else
{
Length = l;
Buff = new char[Length];
}
}
int GetLength()
{
return Length;
}
char & operator [](int i);
~CharArray()
{
if (Buff != NULL)
{
delete Buff;
}
}
private:
int Length;
char * Buff;
};
//complex.cpp
#include "complex.h"
#include <iostream>
using namespace std;
inline Complex Complex::operator+(const Complex &c)
{
//cout<<"class +"<<endl;
return Complex(this->real + c.real, this->imag + c.imag);
}
inline Complex Complex::operator-(const Complex &c)
{
return Complex(this->real - c.real, this->imag - c.imag);
}
inline Complex Complex::operator*(const Complex &c)
{
return Complex(real * c.real - imag * c.imag, real * c.imag + imag * c.real);
}
inline Complex Complex::operator /(const Complex &c)
{
return Complex((real * c.real + imag * c.imag) / (c.real * c.real + c.imag * c.imag),(imag * c.real - real * c.imag) / (c.real * c.real + c.imag * c.imag));
}
extern void print(const Complex &c)
{
if(c.imag < 0)
{
cout<<c.real<<c.imag<<'i';
}
else
{
cout<<c.real<<'+'<<c.imag<<'i';
}
}
extern void ComplexTest()
{
Complex c1(2.0, 3.0), c2(4.0, -2.0), c3;
cout<<"c1 = ";
print(c1);
cout<<endl;
cout<<"c2 = ";
print(c2);
c3 = c1 + c2;
cout<<endl<<"c1 + c2 = ";
print(c3);
c3 = c1 - c2;
cout<<endl<<"c1 - c2 = ";
print(c3);
c3 = c1 * c2;
cout<<endl<<"c1 * c2 = ";
print(c3);
c3 = c1 / c2;
cout<<endl<<"c1 / c2 = ";
print(c3);
c3 = (c1+c2) * (c1-c2) * c2/c1;
cout<<endl<<"(c1+c2)*(c1-c2)*c2/c1=";
print(c3);
cout<<endl;
}
complex operator +(const complex &c1, const complex &c2)
{
//cout<<"friend +"<<endl;
return complex(c1.real + c2.real, c1.imag + c2.imag);
}
complex operator -(const complex &c1, const complex &c2)
{
return complex(c1.real - c2.real, c1.imag - c2.imag);
}
complex operator *(const complex &c1, const complex &c2)
{
return complex(c1.real * c2.real - c1.imag * c2.imag, c1.real * c2.imag + c1.imag * c2.real);
}
complex operator /(const complex &c1, const complex &c2)
{
return complex((c1.real * c2.real + c1.imag * c2.imag) / (c2.real * c2.real + c2.imag * c2.imag), (c1.imag * c2.real - c1.real * c2.imag) / (c2.real * c2.real + c2.imag * c2.imag));
//return Complex((real * c.real + imag + c.imag) / (c.real * c.real + c.imag * c.imag),(imag * c.real - real * c.imag) / (c.real * c.real + c.imag * c.imag));
}
void display(const complex &c)
{
if(c.imag < 0)
{
cout<<c.real<<c.imag<<'i';
}
else
{
cout<<c.real<<'+'<<c.imag<<'i';
}
}
extern void complexTest()
{
complex c1(2.0, 3.0), c2(4.0, -2.0), c3;
cout<<"c1 = ";
display(c1);
cout<<endl;
cout<<"c2 = ";
display(c2);
c3 = c1 + c2;
cout<<endl<<"c1 + c2 = ";
display(c3);
c3 = c1 - c2;
cout<<endl<<"c1 - c2 = ";
display(c3);
c3 = c1 * c2;
cout<<endl<<"c1 * c2 = ";
display(c3);
c3 = c1 / c2;
cout<<endl<<"c1 / c2 = ";
display(c3);
c3 = (c1+c2) * (c1-c2) * c2/c1;
cout<<endl<<"(c1+c2)*(c1-c2)*c2/c1=";
display(c3);
cout<<endl;
}
char & CharArray::operator[](int i)
{
static char ch = '\0';
if(i < Length && i >= 0)
{
return Buff[i];
}
else
{
cout<<"Index out of range."<<endl;
return ch;
}
}
void CharArrayTest()
{
int cnt;
CharArray string1(6);
char * string2 = "string";
for(cnt=0; cnt < 8; cnt++)
string1[cnt] = string2[cnt];
cout<<endl;
for(cnt=0; cnt < 8; cnt++)
cout<<string1[cnt]<<endl;
cout<<endl;
cout<<string1.GetLength()<<endl;
}
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