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

This is a sample C++ program on Operator Overloading. Using Operator Overloading, here we will concatenate two strings.


#include <iostream.h>
#include <conio.h>
#include <string.h>
#define SIZE 40

class string
{
    char st [SIZE];

    public:

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

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

      void show ( )
        {
           cout << st;
        }

    string operator+ (string);

};

string string :: operator+ (string ss2)
{
string temp;
strcpy (temp.st, st);
strcat (temp.st, ss2.st);
return (temp);
}

int main ( )
{
clrscr ( );
string s1 = "Good";
string s2 = "Day :)";
string s3;

cout << "The Strings Before Concatenation Is \n ";
cout << "String1 = ";
s1.show ( );

cout << " \n String2 = ";
s2.show ( );
s3 = s1 + s2;

cout << "\nThe Strings After Concatenation Is \n ";
cout << '\n';
s3.show ( );
getch ( );
return 0;
}


OUTPUT:

The Strings Before Concatenation Is
String1 = Good
String2 = Day :)

The Strings After Concatenation Is
GoodDay :)