Concatenate String

The source code for program that can check if a numbers Palindrome is given below, copy it in note pad and save it as “.cpp”. Then use suitable compiler to compile it.

/*
 *      
 *      Copyright 2011 techstream.org < techstream.org[at]gmail.com >
 *      
 *      This program is free software; you can redistribute it and/or modify
 *      it under the terms of the GNU General Public License as published by
 *      the Free Software Foundation; either version 2 of the License, or
 *      (at your option) any later version.
 *      
 *      This program is distributed in the hope that it will be useful,
 *      but WITHOUT ANY WARRANTY; without even the implied warranty of
 *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *      GNU General Public License for more details.
 *      
 */

#include
#include      // to use clrscr and getch
void main()
{
	clrscr();	//clears the screen
	char str1[25],str2[25],str3[25];   
    //three string two to store the initial and the other to store the final combined string
	int i,j, k;    //three loop vairables 
   //get the string from the user
   
	cout<<"nenter first string: ";
	gets(str1);

	cout<<"enter second string: ";
	gets(str2);

  // Combining the string
  for (i=0;str1[i]!='';i++)
   {
         	str3[i]=str1[i] ;
   }
 	for(j=0;str2[j]!='';j++)
   {
   	k=i+j;
   	str3[k]=str2[j] ;
   }

   str3[k+1]='';  //add null to the end of the third string to avoid errors
	cout<<"catenated string is: "<