fork download
copy 
  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. // 関数の中でtmpに対してmallocして
  11. // そこに回文を代入してreturnで返しましょう
  12. char *setPalindrome(char s[]){
  13. 	char *tmp;
  14. 	//以下に必要な宣言を含めて書いてください
  15. 	int len = myStrlen(s);
  16. tmp = (char*)malloc(sizeof(char) * (len * 2 + 1));
  17.  
  18.     int pos = 0;
  19.     for (int i = 0; i < len; i++) {
  20.         tmp[pos] = s[i];
  21.         pos++;
  22.     }
  23.  
  24.     for (int i = len - 1; i >= 0; i--) {
  25.         tmp[pos] = s[i];
  26.         pos++;
  27.     }
  28.     tmp[pos] = '\0';
  29.  
  30.     return tmp;
  31. }    
  32.  
  33. //メイン関数はいじる必要はありません
  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 0s 5320KB
comments (?)
stdin
copy 
abcd
stdout
copy 
abcd
  -> abcddcba
https://ideone.com/H9QKxs
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!