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  1. #include <stdio.h>
  2.  
  3.  
  4. int isPalindrome(char s[]) {
  5.     int len = 0;
  6.  
  7.  
  8.     while (s[len] != '\0') {
  9.         len++;
  10.     }
  11.  
  12.     int start = 0;       
  13.     int end = len - 1;    
  14.  
  15.  
  16.     while (start < end) {
  17.         if (s[start] != s[end]) {
  18.             return 0;
  19.         }
  20.         start++;
  21.         end--;
  22.     }
  23.  
  24.     return 1; 
  25. }
  26.  
  27. int main(void) {
  28.  
  29.     printf("shinbunshi: %d\n", isPalindrome("shinbunshi")); 
  30.     printf("repaper: %d\n", isPalindrome("repaper"));      
  31.     printf("girafarig: %d\n", isPalindrome("girafarig"));  
  32.  
  33.     return 0;
  34. }
  35.  
Success #stdin #stdout 0s 5312KB
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stdin
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Standard input is empty
stdout
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shinbunshi: 0
repaper: 1
girafarig: 1
https://ideone.com/rmTh5N
language:
C (gcc 8.3)
created:
1 hour ago
visibility:
public

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