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  1. # include <stdio.h>
  2.  
  3. int isPalindrome(char s[]){
  4.     int i = 0;
  5.     int j = 0;
  6.  
  7.     while (s[j] != '\0') {
  8.         j++;
  9.     }
  10.     j--; 
  11.     while (i < j) {
  12.         if (s[i] != s[j]) {
  13.             return 0; 
  14.         }
  15.         i++;
  16.         j--;
  17.     }
  18.  
  19.     return 1;
  20. }
  21.  
  22. //メイン関数は書き換えなくてよいです
  23. int main(){
  24.     char s[100];
  25.     scanf("%s",s);
  26.     printf("%s -> %d\n",s,isPalindrome(s));
  27.     return 0;
  28. }
  29.  
Success #stdin #stdout 0.01s 5276KB
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stdin
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girafarig
stdout
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girafarig -> 1
https://ideone.com/qNKTF6
language:
C (gcc 8.3)
created:
5 days ago
visibility:
public

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