我在尝试构建一个应用程序,计算三角形的面积,以完成我的作业任务。不太确定我做错了什么,但我输入了三角形的长度,并希望根据海伦公式显示正确的面积: sqrt(s(s-a)(s-b)(s-c))
。但是我得到的输出只有-0.0
。以下是代码:
import java.lang.Math;
public class Formula
{
double area; double s;
public double findArea(double sideA, double sideB, double sideC)
{
s = 1/2 * (sideA + sideB + sideC);
area = Math.sqrt(s*(s-sideA)*(s-sideB)*(s-sideC));
System.out.println("The area of the triangle is " + area);
return area;
}
}
然后我有另一个文件用于主要参数
import java.util.Scanner;
public class findTriangleArea {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
Formula triangle = new Formula();
double a,b,c;
// input triangle lengths a, b, c
Scanner inputTriangle = new Scanner(System.in);
System.out.println("Please enter triangle side a");
a = inputTriangle.nextDouble();
System.out.println("Please enter triangle side b");
b = inputTriangle.nextDouble();
System.out.println("Please enter triangle side c");
c = inputTriangle.nextDouble();
triangle.findArea(a, b, c);
}
}