52 lines
1.8 KiB
Java
52 lines
1.8 KiB
Java
package chapter4.demo45;
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import java.util.Scanner;
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public class Main {
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public static void main(String[] args) {
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// 处理用户输入
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Scanner sc = new Scanner(System.in);
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while(true) {
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// 打印菜单
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ShapeCalculate.printMenu();
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int select = sc.nextInt();
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// 判断用户选项
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switch (select) {
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case 1: // 圆形
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System.out.print("请输入圆形的半径：");
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double radius = sc.nextDouble();
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Circle circle = new Circle(radius);
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// Shape circle = new Circle(radius);
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ShapeCalculate.printArea(circle);
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ShapeCalculate.printPerimeter(circle);
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break;
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case 2: // 长方形
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System.out.print("请输入长方形的长和宽：");
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double length = sc.nextDouble();
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double width = sc.nextDouble();
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// Shape rectangle = new Rectangle(length, width);
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Rectangle rectangle = new Rectangle(length, width);
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ShapeCalculate.printArea(rectangle);
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ShapeCalculate.printPerimeter(rectangle);
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break;
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default:
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System.out.println("输入错误，请重新选择");
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ShapeCalculate.printMenu();
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break;
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}
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// 询问用户是否继续
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System.out.println("继续计算？（Y / N）");
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String answer = sc.next();
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if ("N".equalsIgnoreCase(answer)) { // 无论大小写，都识别
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break;
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}
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}
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System.out.println("感谢您的使用，再见！");
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sc.close();
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}
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}
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