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. 	int len = myStrlen(s);
  15.  
  16.     tmp = (char *)malloc(sizeof(char) * (len * 2 + 1));
  17.  
  18.     for(int i = 0; i < len; i++){
  19.         tmp[i] = s[i];
  20.     }
  21.  
  22.     for(int i = 0; i < len; i++){
  23.         tmp[len + i] = s[len - 1 - i];
  24.     }
  25.  
  26.     tmp[len * 2] = '\0';
  27.  
  28.     return tmp;
  29. }
  30.  
  31. int main(){
  32.     int i;
  33.     char nyuryoku[1024];
  34.     char *kaibun;
  35.     scanf("%s",nyuryoku);
  36.     kaibun = setPalindrome(nyuryoku);
  37.     printf("%s\n  -> %s\n",nyuryoku,kaibun);
  38.     free(kaibun);
  39.     return 0;
  40. }
  41.  
Success #stdin #stdout 0.01s 5288KB
comments (?)
stdin
copy 
abcd
stdout
copy 
abcd
  -> abcddcba
https://ideone.com/uURlgr
language:
C (gcc 8.3)
created:
8 hours 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!