Std::stack

#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

1 vote173 views1 answer
Perulangan c++
C++
1 vote189 views3 answers
Cout in c++
C++
1 vote217 views1 answer
Get handle in C++
C++
0 vote192 views1 answer
C++ linker input and output
C++
0 vote187 views1 answer
3. The method indexOf, part of the List interface, returns the index of the first occurrence of an object in a List. What does the following code fragment do?
C++
0 vote202 views1 answer
C++ first index 0 or 1
C++
0 vote227 views1 answer
Opencv read gif c++
C++
1 vote192 views2 answers
C++ cast to type of variable
C++
5 votes187 views2 answers
C++ break Statement
C++
0 vote249 views1 answer
String to decimal c++ strtol
C++