PARAT AMCHO PROGRAMMM!!! :-p

#include<iostream.h>
#include<string.h>
class string
{
    char str[100];

public:
    void enter()
    {
        cout<<"Enter the string ";
        cin>>str;
    }

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

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

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

    return 0;
}

Output:
Enter the string dhruv
Enter the string Dhruv

Entered string is " dhruv"
Entered string is " Dhruv"

Strings are not equal
Press any key to continue

#include<iostream.h>
class complex
{
    int real;
    int img;
public:
    complex()
    {
        real=0;
        img=0;
        cout<<"Default constructor called\n";
    }

    complex(int r,int i)
    {
        real=r;
        img=i;
        cout<<"\nParametrized constructor called\n";
    }
    complex(complex &a)
    {
        real=a.real;
        img=a.img;
        cout<<"\nCopy constructor called\n";
    }
    ~complex()
    {
        cout<<"Destructor called\n";
    }
    void enter()
    {
        cout<<"Enter real part ";
        cin>>real;
        cout<<"Enter imaginary part ";
        cin>>img;
    }
    void add(complex &a)
    {
        real+=a.real;
        img+=a.img;
    }
    void display()
    {
        cout<<"The no is"<<real<<"+i"<<img<<endl;
    }
};

int main()
{
    complex a;
    a.enter();
    complex b(2,3);
    complex c(b);
    a.display();
    cout<<"Parametrized constructor objects";
    b.display();
    cout<<"Copy constructor objects";
    c.display();
    cout<<"\nAdd c+a";
    c.add(a);
    c.display();

    return 0;
}