Answer to Question #297384 in C++ for Rival

Question

Write a program that accepts a string as an input and perform following –

Write a function that accepts a string as an argument and display the reverse of that string and return that string.

Write another function that accepts a string as its argument and check whether the string is palindrome or not.

Answer 1

#include <iostream>


std::string reverse(std::string str)
{
    std::string res = "";
    res.resize(str.size());
    for (int i = str.size()-1; i >= 0; i--)
    {
        res[i] = str[str.size() - 1 - i];
    }
    return res;
}


bool is_palindrome(std::string str)
{
    if (reverse(str) == str)
    {
        return 1;
    }
    return 0;
    
}


int main()
{
    std::string str;
    std::cout << "Enter string : ";
    std::cin >> str;


    std::cout << "Reverse string : " << reverse(str) << '\n';
    if (is_palindrome(str))
    {
        std::cout <<str << " is palindrome\n";
    }
    else
    {
        std::cout << str << " is not palindrome\n";
    }
   


   
    std::cout << "Hello World!\n";
}