如果输入的数字是900呢，它的余数不也是零吗？就会显示它是0位数字，怎么回事？
public class HelloWorld{
public static void main(String[] args){
int num = 999;
int count = 0;
while(num%10!=0){
num=num/10;
count++;
}
System.out.println("它是个"+count+"位的数！");
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public class HelloWorld{
public static void main(String[] args){
int num = 999;
int count = 0;
while(num%10!=0){
num=num/10;
count++;
}
System.out.println("它是个"+count+"位的数！");
2015-06-09
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