Palindrome check of a string.

palindrome.cpp

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

using namespace std;

int isPalindrome(char* str)
{
    static int length = strlen(str);
    if (length<1)
        return 1;
    if (str[0] == str[length-1])
    {
        length -= 2;
        return isPalindrome (str+1);/*Recursive call as the function isPalindrome
        is called again within itself*/
    }
    else 
    	return 0;
}
 
 
int main (void)
{
    int result;
    char* str;
    gets(str);/*Input a string to check whether it is a palindrome or not*/
    //cout<<str;
    result = isPalindrome(str);/*The function isPalindrome is called.It takes a string
    argument and returns a value 0 or 1 which is stored in
    the integer variable "result"*/
    if (result==1)
        cout<<"Palindrome\n";
    else
        cout<<"Not Palindrome\n";
    return 1;
}