C#-Assignment 3

세 번째 작고 소듕한 과제(Class Roster)입니다.
다음은 main.cs의 코드입니다.

using System;
               
public class Program
{
   public static void Main()
   {

    // set capacity
    const int Capacity = 40;
     
    // define arrays
    string[] LastName = new string[Capacity];
    string[] FirstName = new string[Capacity];
    string[] MiddleName = new string[Capacity];
    string[] PhoneNumber = new string[Capacity];
    string[] Email = new string[Capacity];
    string[] GPA = new string[Capacity];

    // define variables 
    string strLastName ="";
    string strFirstName ="";
    string strMiddleName ="";
    string strPhone = "";
    string Phone10digits = "";
    string strphone1;
		string strphone2;
		string strphone3;
    string strEmail;
    string strGPA;
    double dblGPA;
    bool HasNumericDigits;
    bool IsValidPhoneNumber;
     
   // get user's lastname
		int size = 0;
    do 
    {
      do
      {
        Console.WriteLine ("Last Name = ");
        strLastName = Console.ReadLine();
      }
      while (Validate.HasNumericDigits(strLastName)&&strLastName!="");
 
      if (strLastName=="") continue;
      
      LastName[size] = strLastName;


   // get user's firstname 
      			for (int y = 0; y < Capacity; y++)
			{
				 Console.WriteLine ("First Name = ");
	       strFirstName = Console.ReadLine();
				int firstLength = strFirstName.Length;

HasNumericDigits = Validate.HasNumericDigits(strFirstName);
				if (HasNumericDigits == true || firstLength == 0)
				{
					continue;
				}
				else
        {
           FirstName[size] = strFirstName;
        }
break;
            }
      
   // get user's middlename
      do
      {
        Console.WriteLine ("Middle Name = ");
        strMiddleName = Console.ReadLine();
      }
      while (Validate.HasNumericDigits(strMiddleName));
      
      MiddleName[size] = strMiddleName;


      
   // get user's PhoneNumber
  				for (int a = 0; a < Capacity; a++)
			{
            Console.WriteLine ("Phone Number = ");
            strPhone = Console.ReadLine();
IsValidPhoneNumber = Validate.IsValidPhoneNumber(strPhone, out Phone10digits);

					if (strPhone == "")
			 {
					PhoneNumber[size] = strPhone;
				}
          else if (IsValidPhoneNumber == false)
            {
							continue;
						}
						else
						{
							strphone1 = Phone10digits.Insert(0, "(");
							strphone2 = strphone1.Insert(4, ") ");
							strphone3 = strphone2.Insert(9, "-");
							PhoneNumber[size] = strphone3;
						}
break;
                }

      // get user's email
      do
      {
        Console.WriteLine ("Email = ");
        strEmail = Console.ReadLine();
        if (strEmail == "")
			 {
					Email[size] = strEmail;
				}
          else if (!Validate.IsValidEmail(strEmail) == true)
            {
							continue;
						}
						else
						{
							Email[size] = strEmail;
						}break;     
      }
      while (!Validate.IsValidEmail(strEmail));
      
      Email[size] = strEmail;
      
 
  // get user's GPA
         do
      {
        Console.WriteLine("GPA = ");
        strGPA = Console.ReadLine();
        dblGPA = Convert.ToDouble(strGPA);
      } 
      while (0>dblGPA && dblGPA>4);
      if(strGPA=="")continue;

      string strGpa = Convert.ToString(dblGPA);

      GPA[size] = strGPA;
      
   //big do while loop
      size++;
    }
    while (size< Capacity && strLastName !="");

  //Print student table
  int[] field = new int[] {20,18,25,4};
		
	string Header = "Name".PadRight(field[0]) +   "Phone".PadRight(field[1]) + "Email".PadRight(field[2]) + "GPA".PadRight(field[3]);
     
	string Separator = " ".PadLeft(field[0], '=') + " ".PadLeft(field[1], '=') + " ".PadLeft(field[2], '=') +" ".PadLeft(field[3], '=');
		
		Console.WriteLine(Header);
		Console.WriteLine(Separator);

    for (int i =0; i < size; i++)
    {
			Console.WriteLine((LastName[i] + ", " + FirstName[i] + " " + MiddleName[i]).PadRight(field[0]) + PhoneNumber[i].PadRight(field[1])+ Email[i].PadRight(field[2]) + GPA[i].PadRight(field[3]));

    }
	string Separator2 = " ".PadLeft((68), '=');
  Console.WriteLine(Separator2);
   
//get avg gpa
int z = 0;
double sum=0;
for (z = 0; z < size; z++)
         {
          sum+=double.Parse(GPA[z]);
           }
     Console.Write("There are " + z + " student(s) with an average GPA of {0}",Math.Round(sum/ (z),2));

  }
}

다음은 validation.cs의 코드입니다. 해당 코드들은 위의 main.cs에서 이름, 전화번호, 이메일을 validate하는데 사용됩니다. 위에 Validate.()을 통해서 불러와 validation을 하게 되는 구조입니다.

using System;

public class Validate {

  public static bool IsNumericDigit(char c) {
    return '0' <= c && c <= '9';
  }

  public static bool HasNumericDigits(string s) {
    foreach (char c in s)
      if (IsNumericDigit(c)) return true;
    
// Same loop written with for
//    for (int i = 0; i < s.Length; i++)
//      if (IsNumericDigit(s[i])) return true;

    return false;
  }

  public static bool IsValidPhoneNumber(string s, out string strPhoneNumber) {
    strPhoneNumber = "";
    for (int i=0; i < s.Length; i++) {
      if (IsNumericDigit(s[i]))
        strPhoneNumber += s[i];
      else switch (s[i]) {
        case '-' :
        case '.' :
        case ' ' :
        case '(' :
        case ')' : 
          break;
        default:
          return false; 
      }
    }
    return strPhoneNumber.Length == 10;
  }

  public static bool IsValidEmail(string s) {
		string[] word;
		// Check the presence of exactly one @ character and non-empty user name
		word = s.Split('@');
		if (word.Length != 2 || word[0] == "")
			return false;

		// Check the presence of exactly one dot character and non-empty domain name
		string domain = word[1];
		word = domain.Split('.');
		if (word.Length != 2 || word[0].Length == 0)
			return false;

		// Check the domain suffix
    string suffix = word[1];
		switch (suffix) {
			case "com":
			case "net":
			case "org":
			case "me":
      case "edu":
				break;
			default:
				return false;
		}
		return true;
	}
}

위 코드들을 통해 다음과 아웃풋을 도출하였습니다. 유저가 입력을 마치면 table에 모든 정보를 저장하고 학생들의 수와 학점 평균을 도출합니다.