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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.     int len = myStrlen(s);
  14.     int i;
  15.  
  16.  
  17.     tmp = (char *)malloc(sizeof(char) * (len * 2 + 1));
  18.  
  19.     for(i = 0; i < len; i++){
  20.         tmp[i] = s[i];
  21.     }
  22.  
  23.  
  24.     for(i = 0; i < len; i++){
  25.         tmp[len + i] = s[len - 1 - i];
  26.     }
  27.    tmp[len * 2] = '\0';
  28.  
  29.     return tmp;
  30. }
  31.  
  32.  
  33. int main(){
  34.     int i;
  35.     char nyuryoku[1024];
  36.     char *kaibun;   
  37.     scanf("%s", nyuryoku);
  38.     kaibun = setPalindrome(nyuryoku);
  39.     printf("%s\n  -> %s\n", nyuryoku, kaibun);
  40.     free(kaibun);
  41.     return 0;
  42. }
Success #stdin #stdout 0.01s 5316KB
comments (?)
stdin 
abcd
stdout 
abcd
  -> abcddcba
https://ideone.com/kBh9vj
language:
C (gcc 8.3)
created:
8 days ago
visibility:
public

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