将十进制数转化为二进制数

将一个十进制数转化为二进制数

import java.util.Scanner;

public class TenToTwo{
	public static void main(String[] args){
		int i;
		String str = "";
		Scanner sc = new Scanner(System.in);
		System.out.println("请输入要转化的数：");
		int num = sc.nextInt();
		while(num != 0)
		{
			i = num % 2;
			num = num / 2;
			str = i + str;
		}
		System.out.println(str);
	}
}