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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 total = len * 2;   
  13.     char *tmp = (char *)malloc((total + 1) * sizeof(char));
  14.  
  15.     int i;
  16.  
  17.  
  18.     for(i = 0; i < len; i++){
  19.         tmp[i] = s[i];
  20.     }
  21.  
  22.     for(i = 0; i < len; i++){
  23.         tmp[len + i] = s[len - 1 - i];
  24.     }
  25.  
  26.     tmp[total] = '\0'; 
  27.  
  28.     return tmp;
  29. }
  30.  
  31.  
  32. //メイン関数はいじる必要はありません
  33. int main(){
  34.     int i;
  35.     char nyuryoku[1024]; //入力
  36.     char *kaibun;   //回文を受け取る
  37.     scanf("%s",nyuryoku);
  38.     kaibun = setPalindrome(nyuryoku);
  39.     printf("%s\n  -> %s\n",nyuryoku,kaibun);
  40.     free(kaibun);
  41.     return 0;
  42. }
  43.  
Success #stdin #stdout 0.01s 5288KB
comments (?)
stdin
copy 
abcd
stdout
copy 
abcd
  -> abcddcba
https://ideone.com/JmXFwp
language:
C (gcc 8.3)
created:
19 hours ago
visibility:
public

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