String is a Palindrome or not

C++ PROGRAM TO FIND WHETHER THE STRING IS PALINDROME OR NOT

Sample Test Case    :    Enter the String : Madam

Sample Output    :  Madam is a Palindrome

CODE

#include<bits/stdc++.h>

using namespace std;

int main()

{

    char  str1[20],str2[20];

    int i,j,len=0,flag=0;

    cout<<"Enter the String :";

    gets(str1);

    len=strlen(str1)-1;

    for(i=len,j=0,i>=0;i--,j++)

    str2[j]==str1[i];

    if(strcmp(str1,str2))

    flag==1;

    if(flag==1)

    cout<<str1<<"is a Palindrome";

    else

    cout<<str1<<"is not a Palindrome";

    return 0;

}