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  1. #include <stdio.h>
  2.  
  3. int isPalindrome(char s[]) {
  4.     int i = 0, j;
  5.  
  6.     for(j = 0; s[j+1] != '\0'; j++);
  7.  
  8.     while(i <= j) {
  9.         if(s[i] != s[j]) return 0;  
  10.         i++;
  11.         j--;
  12.     }
  13.  
  14.     return 1; 
  15. }
  16.  
  17. int main() {
  18.     char s[100];
  19.  
  20.     printf("文字列を入力してください：");
  21.     scanf("%s", s);
  22.  
  23.     printf("%s -> %d\n", s, isPalindrome(s));
  24.  
  25.     return 0;
  26. }
Success #stdin #stdout 0.01s 5288KB
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stdin
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repeper
stdout
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文字列を入力してください：repeper -> 1
https://ideone.com/WtCKp0
language:
C (gcc 8.3)
created:
8 days ago
visibility:
public

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