5 回答public class HelloWorld{ public static void main(String[] args){ int num =999; int count = 1; do{ count=count+1; num/=10; }while(num/10!=0); System.out.println("它是個(gè)"+count+"位的數(shù)!"); } }

2 回答 while(num!=0)時(shí)，會(huì)有count++.num/=10呢？

1 回答while(num != 0){ count++; num/=10; } System.out.println("它是個(gè)"+ count+"位的數(shù)！");

4 回答為什么這樣不行while(num/10!= 0){ count++; } count++;

10 回答public class HelloWorld{ public static void main(String[]args){ int i=1; int sum=0; for(;i<=10;i++){ if(i%2!=0){ continue; } sum=sum+i; } System.out.println("1