hw5_13.java

Java程序设计实例

public class hw5_13
{
   public static void main (String args[])
   {
      double n;
      int num=0;  
      for (n=3000.0;n>5.0;n/=2)
         num+=1;
      System.out.println("需要"+num+"天,绳子才会短于5m"); 
   }
}