public class HelloWorld{
public static void main(String[] args){
int num = 12345;
int count = 0;
while(num!=0){
num=num/10;
count++;
}
System.out.println(count);
}
}
老师我觉得我这个写法也是可以的，但是慕课里面不采用
public class Helloworld {
public static void main(String[] args) {
final char SEX='男';
final char SAX='女';
System.out.println("NIHAO"+SEX);
System.out.println("NIN"+SAX);
}
}
