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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.  
  17.  
  18.     tmp = (char *)malloc(sizeof(char) * (len * 2 + 1));
  19.  
  20.     for(i = 0; i < len; i++){
  21.         tmp[i] = s[i];
  22.     }
  23.  
  24.     for(i = 0; i < len; i++){
  25.         tmp[len + i] = s[len - 1 - i];
  26.     }
  27.  
  28.     tmp[len * 2] = '\0';
  29.  
  30.     return tmp;
  31. }
  32. int main(){
  33.     //int i;
  34.     char nyuryoku[1024]; 
  35.     char *kaibun;  
  36.     scanf("%s",nyuryoku);
  37.     kaibun = setPalindrome(nyuryoku);
  38.     printf("%s\n  -> %s\n",nyuryoku,kaibun);
  39.     free(kaibun);
  40.     return 0;
  41. }
Success #stdin #stdout 0s 5336KB
comments (?)
stdin
copy 
abcd
stdout
copy 
abcd
  -> abcddcba
https://ideone.com/ZjSSWo
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

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