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  1. #include <stdio.h>
  2. #include <string.h>
  3. #define BUFF_SIZE 80
  4.  
  5. void hanten(char *s);
  6.  
  7. int main(void) {
  8.     char s[BUFF_SIZE];
  9.     fgets(s, BUFF_SIZE, stdin);
  10.     hanten(s);
  11.     return 0;
  12. }
  13. void hanten(char *s) {
  14.     int i, k;
  15.  
  16.     k = strlen(s);
  17.  
  18.     for (i = (k >= 4 ? 3 : k - 1); i >= 0; i--) {
  19.         printf("%c", s[i]);
  20.     }
  21. }
  22.  
Success #stdin #stdout 0s 2116KB
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stdin
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abcdef
stdout
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dcba
https://ideone.com/f08zmt
language:
C (gcc 8.3)
created:
8 years ago
visibility:
public

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