标题: 基本程序 [打印本页] 作者: 二月的雨 时间: 2014-11-29 09:42 标题: 基本程序 很基本的一个程序，勿喷！
/**
*请比较以下两个程序的区别，说出为什么会有差异？
*
*/
import java.util.Scanner;
class Test1
{
public static void main(String[] args)
{
Scanner input = new Scanner(System.in);
final double PI = 3.14159;
System.out.print("Enter the radius and length of a cylinder: ");
double radius = input.nextDouble();
double length = input.nextDouble();
double area = radius * radius * PI;
System.out.println("The area is "+area);
System.out.println("The volume is "+area*length);
}
}
/*
import java.util.Scanner;
class Test1
{
public static void main(String[] args)
{
Scanner input = new Scanner(System.in);
final double PI = 3.14159;
System.out.print("Enter the radius and length of a cylinder: ");
double radius = input.nextDouble();
double length = input.nextDouble();
double area = radius * radius * PI;
double volume = area * length;
System.out.println("The area is "+area);
System.out.println("The volume is "+volume);
}
}
*/