check_palindrome.cpp

#include <bits/stdc++.h>
using namespace std;
bool f(int i, string s)
{
    if (i >= s.size()/2)
        return true;
    if(s[i] != s[s.size()-i-1])
    return false;
    return f(i+1,s);
}
int main()
{
    string s = "madsm";
    cout<<f(0,s);
}