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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.  
  14. 	int i;
  15. 	int len = myStrlen(s);
  16. 	tmp = malloc(sizeof(char) * (len * 2 + 1));
  17. 	if(tmp == NULL)
  18. 	{
  19. 		printf("ERROR\n");
  20. 		return 0;
  21. 	}
  22.  
  23. 	int y = len;
  24. 	for(i=0; i<len; i++)
  25. 	{
  26. 		tmp[i]=s[i];
  27. 	}
  28.  
  29. 	for (int x = y-1; x>=0; x--)
  30. 		tmp[i++] = s[x];
  31.  
  32. 	tmp[i]= '\0';
  33.  
  34. 	return tmp;
  35.  
  36. }
  37.  
  38.  
  39. //メイン関数はいじる必要はありません
  40. int main(){
  41.     int i;
  42.     char nyuryoku[1024]; //入力
  43.     char *kaibun;   //回文を受け取る
  44.     scanf("%s",nyuryoku);
  45.     kaibun = setPalindrome(nyuryoku);
  46.     printf("%s\n  -> %s\n",nyuryoku,kaibun);
  47.     free(kaibun);
  48.     return 0;
  49. }
  50.  
Success #stdin #stdout 0s 5296KB
comments (?)
stdin
copy 
abcd
stdout
copy 
abcd
  -> abcddcba
https://ideone.com/QWoBdO
language:
C (gcc 8.3)
created:
13 days ago
visibility:
public

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