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. 	char *tmp;
  12.     int len = myStrlen(s);
  13.     int new_len = len * 2; 
  14.  
  15.  
  16.     tmp = (char*)malloc((new_len + 1) * sizeof(char));
  17.  
  18.     if (tmp == NULL) {
  19.         return NULL;
  20.     }
  21.  
  22.     int i, j;
  23.  
  24.     for (i = 0; i < len; i++) {
  25.         tmp[i] = s[i];
  26.     }
  27.  
  28.  
  29.     for (j = len - 1; j >= 0; j--) {
  30.         tmp[i] = s[j];
  31.         i++;
  32.     }
  33.  
  34.     tmp[new_len] = '\0';
  35.  
  36.     return tmp;
  37. }
  38.  
  39.  
  40. int main(){
  41.     int i;
  42.     char nyuryoku[1024]; 
  43.     char *kaibun;    
  44.     scanf("%s",nyuryoku);
  45.     kaibun = setPalindrome(nyuryoku);
  46.     printf("%s\n -> %s\n",nyuryoku,kaibun);
  47.     free(kaibun);
  48.     return 0;
  49. }
Success #stdin #stdout 0.01s 5312KB
comments (?)
stdin
copy 
abcd
stdout
copy 
abcd
 -> abcddcba
https://ideone.com/tpA9JA
language:
C (gcc 8.3)
created:
2 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!