05/08 19일차 Java OOP Test

패키지명 : com.kosta.sample.quiz1

다음과 같은 정보를 관리하는 Sukang 클래스가 있다.
이름     국어   영어  수학
-------  -----  -----  -----
홍길동   100   90    80
아무개     88   77    66

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1. Sukang 클래스에 국어,영어,수학 점수를 담을 수 있는 빈 배열 변수 scores를 생성하세오.
    배열 변수 scores : 인스턴스 변수(접근제어자 private)
    생성자 : 기본생성자


2. Sukang 클래스의 부모 클래스 Score를 생성하시오.
   생성자1 : "국어   영어  수학"이라는 타이틀을 출력하는 함수
          실행결과)  국어   영어  수학
   생성자2 : 국어,영어,수학 점수를 매개변수로 받아 출력하는 함수
               (생성자1 함수를 사용할 것)
           실행결과)  국어   영어  수학
                         100   90    80
             국어   영어  수학
                          88   77    66

3. Score 클래스에 각 과목의  "과목명 평균점수"를 계산해서 리턴해주는 subjectAverage() 함수를 생성하세요.
   
4. Score 클래스에 전체 응시인원수를 리턴해주는 userCount() 함수를 생성하세요.

5. Sukang 클래스에서 subjectAverage() 함수를 재사용해 사용자 이름도 같이 출력되는 함수를 생성하세요.

 

main.class

public class test{
	public static void main(String[] args){
    	Sukang clsArr = {new Sukang(100,90,80), new Sukang(90,85,85)};
        String str = Score.subjectSum(clsArr);
        System.out.println(clsArr);
    }
}

 

Sukang.class

class Sukang{
	private int ckor;
    private int ceng;
    private int cmath;
    
    Sukang(int k, int e, int m){
    	this.ckor = k;
        this.ceng = e;
        this.cmath = m;
    }
    
    public int getKor(){
    	return ckor;
    }
    
    public int getEng(){
    	return ceng;
    }
    
    public int getMath(){
    	return cmath;
    }
}

 

Score.class

class Score{
	Score(){
    	System.out.println("국어\t 영어\t 수학\t");
    }
    
    Score(int k, int e, int m){
    	System.out.println(k+"\t"+e+"\t"+m+"\t");
    }
    
    public static String subjectSum(Sukang[] sArr){
    	int ksum=0, esum=0, msum=0;
        
        for(int i=0;i<sArr.length;i++){
        	ksum += sArr[i].getKor();
            esum += sArr[i].getEng();
            msum += sArr[i].getMath();
        }
        String msg = "국어: "+ksum+"영어: "+esum+"수학: "+msum;
        return msg;
    }
}