Std::queue

#include <iostream>
#include <stack>
#include <queue>
#include <string>
#include <algorithm>
bool is_palindrome(const std::string &s){
    std::stack<char> LIFO;
    std::queue<char> FIFO;
    for(auto &c: s){
        if(std::isalpha(c)){

            LIFO.push(std::toupper(c));
            FIFO.push(std::toupper(c));
        }
    }
    bool ans;
    while( (LIFO.size() && FIFO.size()) != 0){
        ans = (LIFO.top() == FIFO.front());
        if(!ans){
            return ans;
        }
        LIFO.pop(),FIFO.pop();
    }
    return true ;
}



int main() {
    try{
        std::string s ;
        std::cout << "Enter a string" << std::endl;
        std::cin >> s;
        std::cout << std::boolalpha << is_palindrome( s) << std::endl;
    }catch(std::exception &e){
     std::cout << e.what() << std::endl;
    }

    return 0;
}

Similar codes

0 vote338 views1 answer
String reverse iterator c++
C++
9 votes330 views2 answers
Delete last char of string C++
C++
1 vote351 views1 answer
Fibonacci series in c++ Recursive
C++
0 vote301 views1 answer
C++ map lookup
C++
1 vote317 views1 answer
How to create a pair of double quotes in c++
C++
2 votes306 views2 answers
C++ typedef array
C++
2 votes332 views1 answer
Sfml draw tex
C++
0 vote361 views1 answer
Sort strings by length and by alphabet
C++
0 vote313 views1 answer
Q10
C++
0 vote322 views1 answer
Ifstream file (“code2.txt”); dev C++
C++