public class HelloWorld{
public static void main(String[] args){
int num = 999;
int count = 0;
for (int i = 1;i <= 10;i++){
if (num/Math.pow(10, i) < 1) {
System.out.printf("他是个%d位的数", i);
break;
}
}
}
}
public class HelloWorld{
public static void main(String[] args) {
String cText="我爱慕课网";
String eText="www.imooc.com";
System.out.println(cText+'\n'+eText);
