Question

我正在尝试使用Heron公式计算三角形的面积，但我认为我在Math.pow函数中做错了，因为只要我添加它，我的打印语句不再有效，程序无法编译。这就是我所拥有的：

public class Challenge
{
    public static void main( String[] args )
    {
        double a;

        a = triangleArea(3, 3, 3);
        System.out.println("A triangle with sides 3,3,3 has an area of:" + a);

        a = triangleArea(3, 4, 5);
        System.out.println("A triangle with sides 3,4,5 has an area of:" + a);

        a = triangleArea(9, 9, 9);
        System.out.println("A triangle with sides 9,9,9 has an area of:" + a );
    }

    public static double triangleArea( int a, int b, int c )
    {
        double area;
        double s = (a+b+c)/2;
        s= (s*(s-a)*(s-b)*(s-c));
        area= Math.pow(double s,double b=.5) // this line has the error
        return area;
    }
}

编译器列出以下错误：

Challenge.java:22: error: '.class' expected
        area= Math.pow(double s,double b=.5) // this line has the error
                              ^
Challenge.java:22: error: ';' expected
        area= Math.pow(double s,double b=.5) // this line has the error
                               ^
Challenge.java:22: error: ';' expected
        area= Math.pow(double s,double b=.5) // this line has the error
                                           ^
3 errors

这些错误意味着什么？我该如何修理它们？

Answer 1

此，

area= Math.pow(double s,double b=.5)

应该是这样的，

area = Math.pow(s,0.5);
return area;

我的java exponentiation语法错了吗？

1 个答案: