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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. 	char *tmp;
  13. 	int len = myStrlen(s);
  14.     int newLen = len * 2;  
  15.     tmp = (char *)malloc(sizeof(char) * (newLen + 1));  
  16.     if (tmp == NULL) {
  17.     	 printf("メモリ割り当てに失敗しました\n");
  18.             return 0;
  19. }
  20.  
  21.  
  22.  for (int i = 0; i < len; i++) {
  23.         tmp[i] = s[i];
  24.     }
  25.  
  26.    for (int i = 0; i < len; i++) {
  27.         tmp[len + i] = s[len - 1 - i];
  28.     }
  29.  
  30.  
  31.     return tmp;
  32. }
  33.  
  34. int main(){
  35.     int i;
  36.     char nyuryoku[1024]; //入力
  37.     char *kaibun;   //回文を受け取る
  38.     scanf("%s",nyuryoku);
  39.     kaibun = setPalindrome(nyuryoku);
  40.     printf("%s\n  -> %s\n",nyuryoku,kaibun);
  41.     free(kaibun);
  42.     return 0;
  43. }
  44.  
Success #stdin #stdout 0.01s 5280KB
comments (?)
stdin
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abcd
stdout
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abcd
  -> abcddcba
https://ideone.com/wF2joA
language:
C (gcc 8.3)
created:
6 days ago
visibility:
public

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