[C#] 캡슐화 실습 - 학생 클래스

실습) 다음 내용을 만족하는 학생 클래스를 정의하시오. 목적: 멤버 속성의 이해 학생은 생성할 때 학생 번호와 학생 이름을 전달받습니다.  이 외에 학생의 국어, 영어, 수학 성적을 -1로 설정합니다. 학생을 생성한 후에는 학생의 국어, 영어, 수학 성적을 입력할 수 있습니다.  만약 학생 성적이 0에서 100을 벗어나면 -1로 설정합니다. 학생 이름과 번호, 각 과목의 성적과 총점 및 평균을 확인할 수 있습니다.  그리고 학생 정보를 확인하는 기능을 제공합니다.

*2019년 공주대에서

예제 소스) StudentA.cs (자바 스타일)

using System;     namespace 캡슐화_실습2___학생 {     //자바 혹은 CPP 스타일     class StudentA     {         int num;         public int GetNum()         {             return num;         }           string name;         public string GetName()         {             return name;         }           int[] scores = new int[3];         public void SetKorea(int score)         {             if (score > 100)             {                 score = -1;             }             if (score < 0)             {                 score = -1;             }             scores[0] = score;         }         public int GetKorea()         {             return scores[0];         }           public void SetMath(int score)         {             if (score > 100)             {                 score = -1;             }             if (score < 0)             {                 score = -1;             }             scores[1] = score;         }         public void SetEnglish(int score)         {             if (score > 100)             {                 score = -1;             }             if (score < 0)             {                 score = -1;             }             scores[2] = score;         }                 public int GetMath()         {             return scores[1];         }         public int GetEnglish()         {             return scores[2];         }         public StudentA(int num, string name)         {             this.num = num;             this.name = name;             scores[0] = -1;             scores[1] = -1;             scores[2] = -1;         }                                   public int GetTotal()         {             int sum = 0;             for(int i=0;i<3;i++)             {                 if(scores[i]!=-1)                 {                     sum += scores[i];                 }             }             return sum;         }         public int GetAverage()         {             return GetTotal() / 3;// cnt;         }         public override string ToString()         {             return string.Format("{0},{1}", num, name);         }     } }

Student.cs

using System;   namespace 캡슐화_실습2___학생 {     class Student     {         //int num;         public int Num         {             get;             private set;         }         //string name;         public string Name         {             get;             private set;         }         int[] scores = new int[3];         public int Korea         {             get             {                 return scores[0];             }             set             {                 if(value>100)                 {                     value = -1;                 }                 if(value<0)                 {                     value = -1;                 }                 scores[0] = value;             }         }         public int English         {             get             {                 return scores[1];             }             set             {                 if (value > 100)                 {                     value = -1;                 }                 if (value < 0)                 {                     value = -1;                 }                 scores[1] = value;             }         }         public int Math         {             get             {                 return scores[2];             }             set             {                 if (value > 100)                 {                     value = -1;                 }                 if (value < 0)                 {                     value = -1;                 }                 scores[2] = value;             }         }         public int Total         {             get             {                 int sum = 0;                 for (int i = 0; i < 3; i++)                 {                     if (scores[i] != -1)                     {                         sum += scores[i];                     }                 }                 return sum;             }         }         public int Average         {             get             {                 return Total / 3;             }         }           public Student(int num,string name)         {             Num = num;             Name = name;             scores[0] = -1;             scores[1] = -1;             scores[2] = -1;         }         public override string ToString()         {             return string.Format("{0},{1}", Num, Name);         }     } }

Program.cs

using System;   namespace 캡슐화_실습2___학생 {     class Program     {         static void Main(string[] args)         {             StudentA stua = new StudentA(3, "홍길동");             stua.SetKorea(80);             stua.SetEnglish(120);             stua.SetMath(-23);             Console.WriteLine(stua);             Console.WriteLine("국:{0}", stua.GetKorea());             Console.WriteLine("영:{0}", stua.GetEnglish());             Console.WriteLine("수:{0}", stua.GetMath());             Console.WriteLine("합:{0}", stua.GetTotal());             Console.WriteLine("평:{0}", stua.GetAverage());                 Student stu = new Student(3, "홍길동");             stu.Korea = 80;// stua.SetKorea(80);             stu.English = 120; // stua.SetEnglish(120);             stu.Math = -23; // stua.SetMath(-23);             Console.WriteLine(stu);//Console.WriteLine(stua);             Console.WriteLine("국:{0}", stu.Korea); //Console.WriteLine("국:{0}", stua.GetKorea());             Console.WriteLine("영:{0}", stu.English); //Console.WriteLine("영:{0}", stua.GetEnglish());             Console.WriteLine("수:{0}", stu.Math); //Console.WriteLine("수:{0}", stua.GetMath());             Console.WriteLine("합:{0}", stu.Total); //Console.WriteLine("합:{0}", stua.GetTotal());             Console.WriteLine("평:{0}", stu.Average); //Console.WriteLine("평:{0}", stua.GetAverage());         }     } }

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