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  1. #include <stdio.h>
  2.  
  3. int main() {
  4.     int n, original, reversed = 0, remainder, count = 0;
  5.  
  6.     printf("Enter n: ");
  7.     scanf("%d", &n);
  8.  
  9.     original = n;
  10.  
  11.     if (n == 0) {
  12.         count = 1;
  13.     } else {
  14.         while (n != 0) {
  15.             remainder = n % 10;
  16.             reversed = reversed * 10 + remainder;
  17.             n /= 10;
  18.             count++;
  19.         }
  20.     }
  21.  
  22.     printf("Number of digits: %d\n", count);
  23.  
  24.     if (original == reversed) {
  25.         printf("Palindrome\n");
  26.     } else {
  27.         printf("Not a palindrome\n");
  28.     }
  29.  
  30.     return 0;
  31. }
Success #stdin #stdout 0.01s 5312KB
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stdin
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Standard input is empty
stdout
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Enter n: Number of digits: 5
Not a palindrome
https://ideone.com/EQfcvM
language:
C (gcc 8.3)
created:
3 days ago
visibility:
public

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