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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4. int myStrlen(char s[]) {
  5.     int i;
  6.     for (i = 0; s[i] != '\0'; i++);
  7.     return i;
  8. }
  9.  
  10. char *setPalindrome(char s[]) {
  11.     int len = myStrlen(s); 
  12.     char *tmp = (char *)malloc((2 * len + 1) * sizeof(char)); 
  13.  
  14.     if (tmp == NULL) { 
  15.         printf("Failed to allocate memory\n");
  16.         exit(1);
  17.     }
  18.  
  19.     for (int i = 0; i < len; i++) {
  20.         tmp[i] = s[i];
  21.     }
  22.  
  23.     for (int i = 0; i < len; i++) {
  24.         tmp[len + i] = s[len - i - 1];
  25.     }
  26.  
  27.     tmp[2 * len] = '\0';
  28.  
  29.     return tmp; 
  30. }
  31.  
  32. //メイン関数はいじる必要はありません
  33. int main() {
  34.     char nyuryoku[1024]; // 入力
  35.     char *kaibun;        // 回文を受け取る
  36.  
  37.     scanf("%s", nyuryoku);
  38.  
  39.     kaibun = setPalindrome(nyuryoku);
  40.  
  41.     printf("%s\n  -> %s\n", nyuryoku, kaibun);
  42.  
  43.     free(kaibun);
  44.  
  45.     return 0;
  46. }
  47.  
Success #stdin #stdout 0.01s 5284KB
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shimbunshi
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  -> shimbunshiihsnubmihs
https://ideone.com/YYcmlz
language:
C (gcc 8.3)
created:
5 days ago
visibility:
public

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