这道题错在哪里?
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!");
}
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!");
}
2018-10-12
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