fork download 
  1. #include <iostream> 
  2. using namespace std; 
  3.  
  4.  
  5. int reverse(int num) {
  6.     int reversed = 0;
  7.     while (num > 0) {
  8.         reversed = reversed * 10 + (num % 10);
  9.         num /= 10;
  10.     }
  11.     return reversed;
  12. }
  13. int isPalindrome(int num) {
  14. 	int reversed = reverse(num);
  15.     if (num == reversed) {
  16.         return 1;
  17.     } else {
  18.         return 0;
  19.     } 
  20. }
  21. /*int noPalindromes(int a, int b) {
  22.     int count = 0;
  23.     for (int i = a; i <= b; i++) {
  24.         if (isPalindrome(i)) {
  25.             count++;
  26.         }
  27.     }
  28. }*/
  29. int main() {
  30. 	int num;
  31. 	cin >> num;
  32. 	cout << reverse(num);
  33.  
  34. }
Success #stdin #stdout 0.01s 5308KB
comments (?)
stdin 
123
stdout 
321
https://ideone.com/ZgCO3i
language:
C++ (gcc 8.3)
created:
19 days ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!