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Palindrome numbers project

A palindromic number is a number (such as 626) that remains the same when its digits are reversed. Write a function that returns true if a given number is a palindrome, and false, if it is not. Complete the given function, so that the code in main works and results in the expected output. Sample Input: 13431 Sample Output: 13431 is a palindrome The code is below please I need an explanation for it thanks

30th Oct 2021, 6:24 PM
Emmanuel Osemudiamen
Emmanuel Osemudiamen - avatar
1 Réponse
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#include <iostream> using namespace std; bool isPalindrome(int x) { //complete the function int num, rem, rev=0; num=x; //to be able to save new values to compare original with while(x != 0)//to end loop once x=0 { rem = x%10; //1st step divides number by 10 and makes the remainder the value of rem. Ex. 1234/10=123.4 rem=4 rev= rev*10 + rem; //reverse number starts at 0 *10 + rem(4)=4 x /= 10; //x becomes the value of x/10(123) //these steps repeat. Rem=3, rev =4*10+3=43, x=123/10=12, until rev= 4321 and x=0. } if (rev==num) { return true; } else { return false; } } int main() { int n; cin >>n; if(isPalindrome(n)) { cout <<n<<" is a palindrome"; } else { cout << n<<" is NOT a palindrome"; } return 0; }
30th Oct 2021, 6:25 PM
Emmanuel Osemudiamen
Emmanuel Osemudiamen - avatar