/*
* 본 코드는 생활코딩 Java 수업을 위해서 만들어진 코드입니다. 
* http://o...content-available-to-author-only...s.org/module/516
* 누구든지 이 코드를 이용해서 원하는데로 사용할 수 있습니다. (public domain)
* 본 코드는 아래 수업에서 활용되고 있습니다.
* 실제 수업의 내용과 ideone.com의 코드는 다를 수 있습니다. 
* ideone.com 플랫폼의 특성 때문입니다.
*/
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
class Calculator2 {
    static double PI = 3.14;
	// 클래스 변수인 base가 추가되었다.
	static int base = 0;
	int left, right;
 
	public void setOprands(int left, int right) {
		this.left = left;
		this.right = right;
	}
 
	public void sum() {
		// 더하기에 base의 값을 포함시킨다.
		System.out.println(this.left + this.right + base);
	}
 
	public void avg() {
		// 평균치에 base의 값을 포함시킨다.
		System.out.println((this.left + this.right + base) / 2);
	}
}
 
class CalculatorDemo2 {
 
	public static void main(String[] args) {
 
		Calculator2 c1 = new Calculator2();
		c1.setOprands(10, 20);
		// 30 출력
		c1.sum();
 
		Calculator2 c2 = new Calculator2();
		c2.setOprands(20, 40);
		// 60 출력
		c2.sum();
 
		// 클래스 변수 base의 값을 10으로 지정했다.
		Calculator2.base = 10;
 
		// 40 출력
		c1.sum();
 
		// 70 출력
		c2.sum();
 
	}
 
}

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