public class HelloWorld{
public static void main(String[] args){
int num = 999;
int count = 0;
if(num>=0&&num<=999999999)
{
while(num!=0)
{
count++;
num/=10;
}
System.out.println("它是个"+count+"位的数");
String today="日";
switch(today){
case "一":
case "三":
case "五":
System.out.println("周"+today+":吃包子");
break;
case "二":
case "四":
case "六":
System.out.println("周"+today+":吃油条");
break;
default:
System.out.println("周"+today+":吃主席套餐");
}
public class HelloWorld {
public static void main(String[] args) {
int score = 53;
int count = 0;
System.out.println(score);
while (score < 60){
score++;
count++; }
System.out.println(score);
System.out.println(count); } }
