fork(19) download
copy 
  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4. int cmp(const void *a, const void *b)
  5. {
  6.     return *(char *)b - *(char *)a;
  7. }
  8.  
  9. int main()
  10. {
  11.     char *numbers = NULL;
  12.     size_t qty = 0;
  13.  
  14.     for (int c; (c = getchar()) != EOF; )
  15.     {
  16.         if (c >= '0' && c <= '9')
  17.         {
  18.             char *tmp = realloc(numbers, qty + 1);
  19.             numbers = tmp;
  20.             numbers[qty++] = c;
  21.         }
  22.     }
  23.     if (qty == 0)
  24.         puts("-1");
  25.     else if (qty == 1 && *numbers == '0')
  26.         puts("0");
  27.     else
  28.     {
  29.         qsort(numbers, qty, 1, cmp);
  30.         for (size_t i = 0; i < qty; i++)
  31.             putchar(numbers[i]);
  32.     }
  33.     puts("");
  34.     free(numbers);
  35.     return 0;
  36. }
Success #stdin #stdout 0s 9424KB
comments (?)
stdin
copy 
Day 10, mice 8: "Year" 7 is a mistake 91.
stdout
copy 
987110
https://ideone.com/s4MfUE
language:
C99 (gcc 8.3)
created:
4 years 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!