public class HelloWorld{ public static void main(String[] args){ int num =999; int count = 1; do{ count=count+1; num/=10; }while(num/10!=0); System.out.println("它是个"+count+"位的数!"); } }
public class HelloWorld{ public static void main(String[] args){ int num =999; int count = 1; do{ count=count+1; num/=10; }while(num/10!=0); System.out.println("它是个"+count+"位的数!"); } }