哪里错了？请大神帮忙看看
public class HelloWorld{
public static void main(String[] args){
int num = 999;
int count = 0;
while(num>0)
{
num=num/10;
count++;
}
System.out.println("它是个"+count+"位的数");
}
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public class HelloWorld{
public static void main(String[] args){
int num = 999;
int count = 0;
while(num>0)
{
num=num/10;
count++;
}
System.out.println("它是个"+count+"位的数");
}
2016-04-11
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