public class HelloWorld{
public static void main(String[] args){
int num = 999;
int count = 0;
for(int i=0; i<10;i++){
if(num/10>1){
count++;
}else{
System.out.println("它是个"+count+"位的数");
break;
}
}
}
}
if条件里面大于零试试
中学课程
中学课程
弄好了，谢谢
public class HelloWorld{
public static void main(String[] args){
int num = 999;
int count = 0;
if(num >= 0 && num <= 999999999){
while(num != 0){
count++;
num/=10;
}
System.out.println("它是个" + count + "位的数！");
}else{
System.out.println("输入有误！");
}
}
}