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. char *setPalindrome(char s[])
  11. {
  12.     int len = myStrlen(s);
  13.     int total_len = 2 * len;
  14.     char *tmp = (char *)malloc((total_len + 1) * sizeof(char));
  15.  
  16.     if (tmp == NULL)
  17. {
  18.         fprintf(stderr, "Memory allocation failed\n");
  19.         return NULL;
  20.     						}
  21.  
  22.  
  23.     for (int i = 0; i < len; i++)
  24. {
  25.         tmp[i] = s[i];               
  26.         tmp[total_len - 1 - i] = s[i];
  27.     										}
  28.     tmp[total_len] = '\0';
  29.  
  30.     return tmp;
  31. }
  32.  
  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 5292KB
comments (?)
stdin
copy 
abcd
stdout
copy 
abcd
  -> abcddcba
https://ideone.com/KOiYiZ
language:
C (gcc 8.3)
created:
5 days 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!