public class Demo2 {
public static void main(String[] args) {
int[] scores = new int[]{5,5,6,5,4};
int i=0;
for (int score:scores) {
System.out.print("分数为:"+score);
System.out.println(", 索引为:"+i);
i++;
}
}
}
public class HelloWorld{
public static void main(String[] args){
int num = 999;
int count = 0;
for(int x = 1;x<num;count++){
x = x*10;
}
System.out.println("它是个" + count + "位的数！");
}
}
public class HelloWorld{
public static void main(String[] args){
int num = 999;
while(num>=0&&num<=999999999)
{
int count=num/10;
}
System.out.println("它是个"count"位的数！");
}
}
WHY not?
