Java(Class2)_Exam_03

2024-10-31

 

 

 

 

 

도형을 선택하세요.(1. 원형, 2. 사각형)
도형 선택 >>> 1
반지름 입력 >>> 50
====================================
원의 면적 : 7850.0

 

package exam;

public interface Shape {
	
	double pai = 3.14;
	
	double findArea();

}

 

package exam;

public class Circle implements Shape {

	int radius;
	
	public Circle() {}
	public Circle(int radius) {
		
		this.radius = radius;
	}
	@Override
	public double findArea() {
		
		
		return (pai * (radius * radius));
	}
	
}

 

package exam;

public class Rectangle implements Shape {

	int width;
	int height;
	
	public Rectangle() {}
	public Rectangle(int width, int height) {
		
		this.width = width;
		this.height = height;
	}
	@Override
	public double findArea() {
		
		
		return (width * height);
	}
}

 

package exam;

import java.util.Scanner;

public class Shape_03 {

	public static void main(String[] args) {
		
		Scanner sc = new Scanner(System.in);
		
		System.out.println("도형을 선택하세요.(1. 원형, 2. 사각형)");
		System.out.print("도형 선택 >>> ");
		
		if(sc.nextInt() == 1) {
			
			System.out.print("반지름 입력 >>> ");
			Circle circle = new Circle(sc.nextInt());
			System.out.println("====================================");
			
			System.out.printf("원의 면적 : %.1f\n", circle.findArea());
		}else if(sc.nextInt() == 2){
			
			System.out.print("가로 >>> ");
			int a = sc.nextInt();
			System.out.print("세로 >>> ");
			int b = sc.nextInt();
			Rectangle rectangle = new Rectangle(a, b);
	
			System.out.println("====================================");
			
			System.out.printf("사각형의 면적 : %.1f\\n", rectangle.findArea());
		}else {
			
			System.out.println("잘못 입력하셨습니다.");
		}
		sc.close();
	}
}