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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.  
  11. char *setPalindrome(char s[]) 
  12. {
  13.     int size = myStrlen(s);
  14.     int i, j;
  15.  
  16.     char *tmp=(char *)malloc(sizeof(char) * (2 * size + 1));
  17.  
  18.  
  19.     for(i=0;i<size;i++) 
  20.     {
  21.         tmp[i]=s[i];
  22.     }
  23.  
  24.     for(j=0;j<size;j++)
  25.     {
  26.         tmp[i++]=s[size - 1 - j];
  27.     }
  28.  
  29.     return tmp;
  30. }
  31.  
  32. int main() {
  33.     int i;
  34.     char nyuryoku[1024]; // 入力
  35.     char *kaibun;        // 回文を受け取る
  36.     scanf("%s", nyuryoku);
  37.     kaibun = setPalindrome(nyuryoku);
  38.     printf("%s\n  -> %s\n", nyuryoku, kaibun);
  39.     free(kaibun);
  40.     return 0;
  41. }
  42.  
  43.  
Success #stdin #stdout 0s 5292KB
comments (?)
stdin
copy 
abcd
stdout
copy 
abcd
  -> abcddcba
https://ideone.com/7bQtgU
language:
C (gcc 8.3)
created:
14 days ago
visibility:
public

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