public class HelloWorld{
public static void main(String[] args){
int num = 999;
int count = 0;
for (;(num/=10)>0;count ++);
System.out.println("它是个"+ (count+1)+"位的数!");
public static void main(String[] args){
int num = 999;
int count = 0;
for (;(num/=10)>0;count ++);
System.out.println("它是个"+ (count+1)+"位的数!");
public class HelloWorld {
public static void main(String[] args) {
int age=25;
String yy;
if(age>=18){
yy="成年";
}else{
yy="未成年";
}
System.out.println(yy);
}
}
public static void main(String[] args) {
int age=25;
String yy;
if(age>=18){
yy="成年";
}else{
yy="未成年";
}
System.out.println(yy);
}
}
2020-08-22