十进制转二进制.c

#include<stdio.h>

void func(int);

int main(void)
{
  int n;

  while(scanf("%d", &n) != EOF)
  {
    func(n);
  }
  return 0;
}

void func(int n)
{
  int a[32], i, j;

  i = n;

  for(j = 0; i != 0; j++)
  {
    a[j] = i % 2;

    i /= 2;
  }

  for(j--; j>=0; j--)
  {
    printf("%d", a[j]);
  }

  printf("\n");
}

http://10.11.246.150/JudgeOnline/problem.php?cid=2005&pid=0