TQC+ JAVA

JPA02.java

import java.util.*;
public class JPA02 {
    static Scanner keyboard = new Scanner(System.in);
    public static void main(String[] args) {
        test();        
        test();
        test();
        test();
    }
    
    public static void test() {
		System.out.print("請輸入x座標: ");
		double x = keyboard.nextDouble();
		System.out.print("請輸入y座標: ");
		double y = keyboard.nextDouble();
		if(x == 0 && y == 0) {
			System.out.println("(" + x + "," + y + ") 在原點上");
		}
		if(x == 0 && (y > 0 || y < 0)) {
			System.out.println("(" + x + "," + y + ") 在y軸上");
		}
		if(y == 0 && (x > 0 || x > 0)) {
			System.out.println("(" + x + "," + y + ") 在x軸上");
		}
		if(x > 0 && y > 0) {
			System.out.println("(" + x + "," + y + ") 在第一象限");
		}
		if(x < 0 && y > 0) {
			System.out.println("(" + x + "," + y + ") 在第二象限");
		}
		if(x < 0 && y < 0) {
			System.out.println("(" + x + "," + y + ") 在第三象限");
		}
		if(x > 0 && y < 0) {
			System.out.println("(" + x + "," + y + ") 在第四象限");
		}
    }
}