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  1. # include <stdio.h>
  2.  
  3. int isPalindrome(char s[]){
  4. int start=0;
  5.     int end=0;
  6.     while(s[end]!='\0'){
  7.         end++;
  8.     }
  9.     end--;
  10.     while(start < end){
  11.         if(s[start]!=s[end]){
  12.             return 0;
  13.         }
  14.         start++;
  15.         end--;
  16.     }
  17.  
  18.     return 1;  // すべて一致すれば回文
  19. }
  20.  
  21. int main(){
  22.     char s[100];
  23.     scanf("%s",s);
  24.     printf("%s -> %d\n",s,isPalindrome(s));
  25.     return 0;
  26. }
  27.  
Success #stdin #stdout 0s 5256KB
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stdin
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girafarig
stdout
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girafarig -> 1
https://ideone.com/WDy2gy
language:
C (gcc 8.3)
created:
3 days ago
visibility:
public

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