#include <stdio.h>
#include <stdlib.h>
int main(void)
{
  char s[1024];//fgets関数に与える文字列バッファ
  char *t;//fgets戻り値格納用
  int n;//atoi関数の戻り値格納用
  int i = 0, j,a[10] = {};
  while (i < 4) {
    printf("%d回目。　0〜9の数字を入力して下さい。\n", i + 1);
    fgets(s, 1024, stdin);
    n = atoi(s);
    printf("n = %d\n", n);
    if (n < 0 | n > 9)
      printf("範囲外の数字が入力されました。\n" );
    else {
      a[n]++;
      i++;
    }
  }
  for ( i = 0; i < 10; ++i)
    for ( j = 0; j < a[i]; ++j)
      printf("%d ", i);
 
  return (0);
}
 

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LTEKMTAKNAowCjYKNw==

-1
10
4
0
6
7