sequence.java

Java面向对象编程(随书配套源代码) 阐述了面向对象编程的思想

package chapter5;
import java.util.Scanner;
import java.lang.Math;
public class Sequence 
{
	public static void main(String args[])
	{
		Scanner scanner = new Scanner(System.in);
		System.out.println(" 请输入边长A:");
		double a = scanner.nextInt(); //获取键盘输入
		System.out.println(" 请输入边长B:");
		double b = scanner.nextInt(); //获取键盘输入
		System.out.println(" 请输入边长C:");
		double c = scanner.nextInt(); //获取键盘输入	
		double s=1.0/2*(a+b+c);
		double area=Math.sqrt(s*(s-a)*(s-b)*(s-c));
		System.out.println("三角型面积Aera为:" + area);
	}
}