Palindrome String or Not?

[Jinson Jacob]

#include<iostream.h>
#include<string.h>
#include<conio.h>
void main()
{
clrscr();
int i,j,len,flag=1;
char a[20];
cout<<"Enter a string : ";
cin>>a;
len= strlen(a);
for(i=0,j=len-1;i<=len/2;i++,j--)

{
if(a[j]!=a[i])
flag=0;
}
if(flag==1)
cout<<"\n The string is palindrome. ";
else
cout<<"\n The string is not palindrome. ";
getch();
}