Java語言程式設計(基礎篇)第十版 4.7
阿新 • • 發佈:2018-12-12
public class J4_7 { public static void main(String[] args) { // TODO Auto-generated method stub java.util.Scanner input = new java.util.Scanner(System.in); System.out.print("Enter the radius of the bounding circle:"); double radius = input.nextDouble(); double x2 = 0; double y2 = 100; double x3 = Math.cos(Math.PI/10)*(-1)*radius; double y3 = Math.sin(Math.PI/10)*radius; double x1 = Math.cos(Math.PI/10)*radius; double y1 = Math.sin(Math.PI/10)*radius; double x4=Math.cos((3*Math.PI)/10)*(-1)*radius; double y4=Math.sin((3*Math.PI)/10)*(-1)*radius; double x5=Math.cos((3*Math.PI)/10)*radius; double y5=y4; System.out.println("The coordinates of five point on the pentagon are:"); System.out.println("("+x1+","+y1+")"); System.out.println("("+x2+","+y2+")"); System.out.println("("+x3+","+y3+")"); System.out.println("("+x4+","+y4+")"); System.out.println("("+x5+","+y5+")"); } }