Is plaindrome

#include <iostream>
#include <deque>
bool is_palindrome(const std::string &s){

    if(s.size() == 1 ) return true;
    std::deque<char> d ;
    for(char i : s){
        if(std::isalpha(i)){
           d.emplace_back( toupper(i) );
        }
    }

    auto front = d.begin();
    auto back = d.rbegin();
    while( (front != d.end()) || (back != d.rend())){
        bool ans = (*front == *back);
        if(!ans){
            return ans;
        }
        ++front;++back;
    }

    return true;


}

int main() {
    std::string s = "A man, a plan, a cat, a ham, a yak, a yam, a hat, a canal-Panama!";
    std::cout << std::boolalpha << is_palindrome(s) << std::endl;
    return 0;
}

Similar codes

0 vote323 views1 answer
Vector int initialize with increasing numbers
C++
1 vote290 views1 answer
What is syntex for inheritence in c++
C++
2 votes290 views1 answer
Dangling Pointer in cpp
C++
0 vote322 views1 answer
10^18 data type in c++
C++
1 vote304 views1 answer
C++ 20 struct initialization
C++
-1 vote317 views5 answers
Memset in c++
C++
0 vote285 views2 answers
C++ function for checking if a sting is a number
C++
2 votes238 views1 answer
Ascii to char c++
C++
2 votes320 views1 answer
Recursive binary search
C++
1 vote311 views1 answer
String input with space c++ stl
C++