判斷一個數（小于10位）的位數。
public class HelloWorld{
public static void main(String[] args){
int num = 999;
int count = 1;
int num1;
for(;count<10;count++)
{
??? num1=num%10;
??? num=num-num1;
??? if(num!=0)
??? {
??????? num=num/10;
??? }
??? else
??? break;
}
System.out.println("它是個"+count+"位的數!");
}
}
2016-05-02
public?class?HelloWorld{ public?static?void?main(String[]?args){ int?num?=?999; int?count?=?0; ????if(num>0&&num<1000000000){ ????????while(num!=0){ ????????????num=num/10; ????????????count?++; ????????} ????} ????System.out.println("它是個"+count+"位的數！"); } }