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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.     int i;
  13.  
  14.     char *tmp = (char *)malloc(sizeof(char) * (2 * len + 1)); // +1 for '\0'
  15.  
  16.     for (i = 0; i < len; i++) {
  17.         tmp[i] = s[i];
  18.     }
  19.  
  20.     for (i = 0; i < len; i++) {
  21.         tmp[len + i] = s[len - 1 - i];
  22.     }
  23.  
  24.     tmp[2 * len] = '\0';
  25.  
  26.     return tmp;
  27. }
  28.  
  29. int main(){
  30.     int i;
  31.     char nyuryoku[1024]; //入力
  32.     char *kaibun;   //回文を受け取る
  33.     scanf("%s",nyuryoku);
  34.     kaibun = setPalindrome(nyuryoku);
  35.     printf("%s\n  -> %s\n",nyuryoku,kaibun);
  36.     free(kaibun);
  37.     return 0;
  38. }
  39.  
Success #stdin #stdout 0s 5228KB
comments (?)
stdin
copy 
abcd
stdout
copy 
abcd
  -> abcddcba
https://ideone.com/FFnHma
language:
C (gcc 8.3)
created:
11 days ago
visibility:
public

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