C++ Program On Operator Overloading-Compare Two Strings.

This is a sample program on operator overloading. Using operator overloading, here the user enters a string and compare it with a predefined string.


#include <iostream.h>
#include <conio.h>
#include <string.h>

class string
{
    char st [30];

    public:

       string ( )
         {
             strcpy (st, " ");
         }

       string (char s [ ] )
         {
             strcpy (st, s);
         }

       void display ( )
         {
             cout << st;
         }

       int operator >= (string);

       void read ( )
         {
             cin >> st;
         }

};

int string :: operator >= (string ss2)
{
    if (strcmp (st, ss2.st) >= 0)
       return (1);
    else
       return (0);
}

int main ( )
{
    clrscr ( );
    string s1 ="Hello World";
    string s2;
   
    cout<<"Enter String: ";
    s2.read ( );
   
    if ( s1 >= s2)
       cout<<"Alphabetically The String You Entered Is Greater. ";
    else
       cout<<"Alphabetically The String You Entered Is Lesser. ";
   
    getch ( );
    return 0;
}


OUTPUT:

Enter String: Good Morning

Alphabetically The String You Entered Is Greater.