public class HelloWorld{ public static void main(String[] args){ int num = 999; int count = 0; if (num==0){ ??? System.out.println("它是個1位的數(shù)!");} if (num>0 && num<=999999999){ ??? while (num!=0){ ??????? count++; ??????? num=num/10; ??? } ??? System.out.println("它是個"+ count+"位的數(shù)!");
2018-07-20
public class HelloWorld{
public static void main(String[] args){
int num = 999;
int count = 0;
if (num==0){
??? System.out.println("它是個1位的數(shù)!");}
if (num>0 && num<=999999999){
??? while (num!=0){
??????? count++;
??????? num=num/10;
??? }
??? System.out.println("它是個"+ count+"位的數(shù)!");
}
}
}
//用這個代碼可以解決0是0位的問題
2018-07-22
num=num/10 ?num什么時候會為0??
2018-07-20
1位。。。。