I am trying to run a program and the compiler seems to just crash right after it executes ... i have no build errors so i am wondering what the hell is going on ... I am a bit of a novice so all help would be appreciated =). I don't know if you might have time to scan through the code but this is what i have got : using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks;

namespace ConsoleApplication1 { public class Student { string Fname, Lname, Program ; int Sid ;

// Inputting information for students
public void InputStudentInfo () 
{
    Console.WriteLine ("Please enter your first name") ;
    Fname = Console.ReadLine() ;
    Console.WriteLine ("Please enter you last name") ;
    Lname = Console.ReadLine() ;
    Console.WriteLine ("Please enter you student ID#") ;
    Sid = int.Parse(Console.ReadLine()) ;
    Console.WriteLine ("Enter the Program that you are completeing") ;
    Program = Console.ReadLine() ;
}

// Printing information for students
public void PrintStudentInfo ()
{
    Console.Write (" Your name is " + Fname) ;
    Console.Write(" " + Lname);
    Console.WriteLine (" Your student identification number is " + Sid) ;
    Console.WriteLine (" The program you are registered for is " + Program) ;
} 

/* public void MenuInterface()
{
    Console.WriteLine (" 1. Input Student information" ) ;
    Console.WriteLine (" 2. Input Course information" ) ;
    Console.WriteLine (" 3. Input Grade information" ) ;
    Console.WriteLine (" 4. Print Course information" ) ;
    Console.WriteLine (" 5. Print Student information" ) ;
    Console.WriteLine (" 6. Print Grade information" ) ;
    Console.WriteLine (" 7. Print Student information including Course they are registered in and the grade obtained for that course" ) ;
    Console.WriteLine (" 8. Print grade info of the course in which student has achieved the highest grade" ) ;
    Console.WriteLine (" 0. Exit") ;
    Console.WriteLine (" Please select a choice from 0-8") ;
    accode = Console.ReadLine();
} */

}

public class Course { string course1, course2, course3 ; int Stuid ;

// Inputting Course Information
public void InputCourseInfo ()
{
    Console.WriteLine (" Please re-enter your identification number") ;
    Stuid = int.Parse(Console.ReadLine()) ;
    Console.WriteLine (" Enter the name of your first course") ;
    course1 = Console.ReadLine() ;
    Console.WriteLine (" Enter the name of your second course") ;
    course2 = Console.ReadLine() ;
    Console.WriteLine (" Enter the name of your third course") ;
    course3 = Console.ReadLine() ;
}

// Printing Course Information
public void PrintCourseInfo ()
{
    Console.WriteLine (" Your ID # is " + Stuid) ;
    Console.Write (" The Courses you selected are " + course1) ;
    Console.Write("," + course2);
    Console.Write(" and " + course3);
}

} public class Grade : Course { int Studentid ; int [] hwgrade ; int [] cwgrade ; int [] midegrade ; int [] finalegrade ; int [] totalgrade ; string coursename ;

    public Grade ( string cname , int Studentident , int [] homework , int [] classwork , int [] midexam , int [] finalexam)
    {
        coursename = cname ;
        Studentid = Studentident ;  
        hwgrade = homework ;
        cwgrade = classwork ;
        midegrade = midexam ;
        finalegrade = finalexam ;
    } 

    public string coname
    {
        get
        {
            return coursename ;
        }
        set
        {
            coursename = value ;
        }
    }

    public int Studentidenty
    {
        get
        {
            return Studentid ;
        }
        set
        {
            Studentid = value ;
        }
    }

    public void InputGradeInfo()
    {
        Console.WriteLine (" Please enter your Student ID" ) ;
        grade.Studentidenty = Console.ReadLine() ;
        for ( int i = 0; i < 3; i++)
        {
            Console.Writeline (" Please enter the Course name" ) ;
            grade.coname[i] = Console.Readline() ;
            Console.Writeline (" Please enter your homework grade") ;
            grade.hwgrade[i] = int.parse(Console.Readline()) ;
           // .....
        }
    }

    public void CalcTotalGrade()
    {
        for (int i = 0; i < 3; i++)
        {
            grade.courseper[i] = (grade.hwgrade[i] + grade.cwgrade[i]) / 2;
            grade.finalper[i] = (grade.midexam[i] + grade.finalegrade[i]) / 2;
            grade.totalgrade[i] = (grade.courseper[i] + finalper[i]) / 2;
        }
    }

    public void PrintGradeInfo()
    {
        for ( int i = 0; i < 3; i++)
        {
            Console.Writeline (" Your homework grade is" + grade.hwgrade[i]) ;
           // .....
        }
    }
        static void Main(string[] args)
        {
            int accode ;
            Student student = new Student() ;
            Course course = new Course() ;
            Grade grade = new Grade() ;
            do
            {
                Console.WriteLine(" 1.  Input Student information");
                Console.WriteLine(" 2.  Input Course information");
                Console.WriteLine(" 3.  Input Grade information");
                Console.WriteLine(" 4.  Print Course information");
                Console.WriteLine(" 5.  Print Student information");
                Console.WriteLine(" 6.  Print Grade information");
                Console.WriteLine(" 7.  Print Student information including Course they are registered in and the grade obtained for that course");
                Console.WriteLine(" 8.  Print grade info of the course in which student has achieved the highest grade");
                Console.WriteLine(" 0.  Exit");
                Console.WriteLine(" Please select a choice from 0-8");
                accode = Console.ReadLine();
                switch (accode)
                {
                    case 1:
                        student.InputStudentInfo();
                        break;
                    case 2:
                        course.InputCourseInfo();
                        break;
                    case 3:
                        grade.InputGradeInfo();
                        break;
                    case 4:
                        course.PrintCourseInfo();
                        break;
                    case 5:
                        student.PRintStudentInfo();
                        break;
                    case 6:
                        grade.PrintGradeInfo();
                        break;
                    case 0:
                        Console.WriteLine(" You have chosen to exit the program have a good day. =)");
                        break;
                }
            } while (accode != 0); 
            Console.ReadKey();
        } 
    }

}