#include <iostream> using namespace std; bool checkPalindrome(const string & rstr) { string fstr; int i=0; //create string with alphanumerics in small case for(auto & ch: rstr) { if(isalnum(ch)) fstr+=tolower(ch); } //cout<<fstr; } int main() { string str; getline(cin,str); cout<< "The passed str "<<str<< " is valid Palindrome "<<checkPalindrome(str)<< endl; return 0; }