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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. char *setPalindrome(char s[]){
  11. 	char *tmp;
  12. 	int i;
  13. 	int len=myStrlen(s);
  14.     tmp = (char *)malloc(sizeof(char) * (len * 2 + 1));
  15.     if (tmp == NULL) return NULL;
  16.     for (i = 0; i < len; i++) {
  17.         tmp[i] = s[i];
  18.     }
  19.  for (i = 0; i < len; i++) {
  20.         tmp[len + i] = s[len - 1 - i];
  21.     }
  22.  
  23.     tmp[len * 2] = '\0';
  24.  return tmp;
  25. }
  26.  
  27. int main(){
  28.     int i;
  29.     char nyuryoku[1024]; 
  30.     char *kaibun;   
  31.     scanf("%s",nyuryoku);
  32.     kaibun = setPalindrome(nyuryoku);
  33.     printf("%s\n  -> %s\n",nyuryoku,kaibun);
  34.     free(kaibun);
  35.     return 0;
  36. }
  37.  
Success #stdin #stdout 0.01s 5320KB
comments (?)
stdin
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abcd
stdout
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abcd
  -> abcddcba
https://ideone.com/ytVF1z
language:
C (gcc 8.3)
created:
5 hours ago
visibility:
public

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