public class HelloWorld{
public static void main(String[] args){
int num = 999;
int count = 1;
int num1;
for(;count<10;count++)
{
num1=num%10;
num=num-num1;
if(num!=0)
{
num=num/10;
}
else
break;
}
System.out.println("它是个"+count+"位的数!");
}
}
public class HelloWorld{ public static void main(String[] args){ int num = 999; int count = 0; if(num>0&&num<1000000000){ while(num!=0){ num=num/10; count ++; } } System.out.println("它是个"+count+"位的数!"); } }