oops operator overloading

// constructor.cpp : Defines the entry point for the console application.
#include "stdafx.h"
#include<iostream>


//write a program to overload unary - operator
//write a program to overload binary operators ie + - * / for any object that stores cmplx nos
//write a program to overload increment and decrement operator


using namespace std;


class cmplx
{
    int real;
    int imag;
public:

    void enter()
    {
        cout<<"enter real part";
        cin>>real;
        cout<<"enter imaginary part";
        cin>>imag;
    }


    void display()
    {
        cout<<"\nthe number is"<<real<<"+"<<imag<<"i";
    }

    cmplx operator+(cmplx &a)
    {
        cmplx t;
        t.real=real+a.real;
        t.imag=imag+a.imag;
        return t;
    }

    cmplx operator-(cmplx &a)
    {
        cmplx t;
        t.real=real-a.real;
        t.imag=imag-a.imag;
        return t;
    }

    cmplx operator*(cmplx &a)
    {
        cmplx t;
        t.real=real*a.real-imag*a.imag;
        t.imag=0;
        return t;
    }

    cmplx operator/(cmplx &a)
    {
        cmplx t;
        t.real=real/a.real;
        t.imag=imag/a.imag;
        return t;
    }

    void operator++()
    {
        real++;
        imag++;

    }

    void operator--()
    {
        real--;
        imag--;

    }

    void operator-()
    {

        real=-real;
        imag=-imag;

    }







};




int _tmain(int argc, _TCHAR* argv[])
{
    cmplx a;
    a.enter();
    cmplx b;
    b.enter();

    cmplx c;
    cout<<"\noverloaded + :";
    c=a+b;
    c.display();

    cout<<"\noverloaded - :";
    c=a-b;
    c.display();

    cout<<"\noverloaded * :";
    c=a*b;
    c.display();

    cout<<"\noverloaded / :";
    c=a/b;
    c.display();

    cout<<"\noverloaded ++ (object a):";
    a++;
    a.display();

    cout<<"\noverloaded --(object b) :";
    b--;
    b.display();

    cout<<"\noverloaded unary -(object a) :";
    -a;
    a.display();

    system("pause");
    return 0;
}



/*
enter real part4
enter imaginary part5
enter real part2
enter imaginary part3

overloaded + :
the number is6+8i
overloaded - :
the number is2+2i
overloaded * :
the number is-7+0i
overloaded / :
the number is2+1i
overloaded ++ (object a):
the number is5+6i
overloaded --(object b) :
the number is1+2i
overloaded unary -(object a) :
the number is-5+-6iPress any key to continue . . .
*/
// constructor.cpp : Defines the entry point for the console application.
#include "stdafx.h"
#include<iostream>
#include<string>



//write a program to compare 2 strings using overloaded = operator
using namespace std;


class stringg
{
    char str[200];
public:

    void enter()
    {
        cout<<"enter string";
        cin>>str;
    }


    void display()
    {
        cout<<"\nThe string is \" "<<str<<"\"";
    }

    void operator=(stringg &a)
    {
        int b=strcmp(str,a.str);
        if(b)
        {
            cout<<"\nStrings not equal";
        }
        else
        {
            cout<<"\nStrings are equal";
        }

    }

};





int _tmain(int argc, _TCHAR* argv[])
{
    stringg a,b;
    a.enter();
    b.enter();

    cout<<"\n\n";
    a.display();
    b.display();
    a=b;

    system("pause");
    return 0;
}




/*
OUTPUT 1:
enter stringPranav
enter stringPranav

The string is " Pranav"
The string is " Pranav"
Strings are equal
Press any key to continue . . .

OUTPUT 2:
enter stringPRANAV
enter stringpranav

The string is " PRANAV"
The string is " pranav"
Strings not equal
Press any key to continue . . .

*/