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  1. #include <stdio.h>
  2.  
  3. int isPalindrome(char s[]) {
  4.     int i = 0;
  5.     int j;
  6.  
  7.     while (s[i] != '\0') {
  8.         i++;
  9.     }
  10.  
  11.     j = i - 1;
  12.     i = 0;
  13.  
  14.     while (i < j) {
  15.         if (s[i] != s[j]) {
  16.             return 0;
  17.         }
  18.         i++;
  19.         j--;
  20.     }
  21.  
  22.     return 1;
  23. }
  24.  
  25. int main() {
  26.     char str[] = "madam";
  27.  
  28.     if (isPalindrome(str)) {
  29.         printf("\"%s\" is a palindrome.\n", str);
  30.     } else {
  31.         printf("\"%s\" is not a palindrome.\n", str);
  32.     }
  33.  
  34.     return 0;
  35. }
  36.  
Success #stdin #stdout 0.01s 5288KB
comments (?)
stdin 
Standard input is empty
stdout 
"madam" is a palindrome.
https://ideone.com/xzcaXU
language:
C (gcc 8.3)
created:
3 days ago
visibility:
public

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