Operator Overloading:-

Concatination of Two Strings

#include<iostream.h>

#include<conio.h>

#include<stdio.h>

#include<iostream.h>

#include<string.h>

class rv{ public:

char str[20];

rv(){ strcpy(str," ");

}

rv(char s[])

{

strcpy(str,s);

}

rv operator +(rv ss) const

{     cout<<"func called\n";

rv temp;

if((strlen(str)+strlen(ss.str))<20)

{   strcpy(temp.str,str);

    strcat(temp.str,ss.str);

}

else

cout<<"Overflow";

return temp;

}

};

void main()

{       clrscr();

rv st1="hello",st2=" ravi",st3;

st3=st1+st2;

cout<<st3.str;

getch();

}