Question

This is in C# on visual Basic

1. Write a base class that has two property members: name and contact and one method member: CalculateFinalGrade(). must be an Abstract class method must be by its child class. (1 point)

For example,

Student {

                Property: StudentName

                Property: Contact

                Method: CalculateFinalGrade()

}

1. Write two child classes and , both of which inherit and implement any abstract member. needs a property for Quiz score and implements CalculateFinalGrade() to calculate final the grade in LETTER (based on Quiz score only). needs two properties, one for quiz score and the other for term paper score, and implements CalculateFinalGrade() to calculate the final grade in LETTER (based on both Quiz and Team Paper scores). The maximum quiz score for both undergraduate and graduate is 250. The maximum term paper score for graduate only is 50. For undergraduate, the final grade is calculated with the formula: (quiz score/250). For graduate, the formula is ((quiz + term paper)/300). In the CalculateFinalGrade(), the calculated final grade in percentage must be converted to the LETTER grade as (A: >=90%; B: >=80% and <90%; C: >=70% and <80%; D: >=60% and <70%; F: <60%). That is, CalculateFinalGrade() will return a LETTER grade. (2 points)

For example, (note: the following are pseudo codes, not C#)

UndergraduateStudent : Student {

Property: QuizScore

Method: CalculateFinalGrade {

      theQuiz = QuizScore/250

                     if theQuiz >= 0.90 then

                        finalGrade = "A"

                 else if theQuiz >= 0.80 then

                        finalGrade = "B"

                 ...

                else if theQuiz <= 0.60 then

                        finalGrade = "F"

finalGrade

}

Note:

1. You can have both and to inherit and overrides the CalculateFinalGrade() in each of them. OR inherits and inherits . That is, the CalculateFinalGrade() in is overridden by the same method in its child class , which is further overridden in its child class .
2. You can use either switch case… or if .. else if.

3. Use the classes in the above to implement the GradeCalculation program as follows. (2 points)

In this program, you don’t need to implement data validation (even though I did it in the demo program). Make sure to hide the Term Paper textbox when the undergraduate is selected.

Answer 1

Source Code:

using System;

class Student {

protected string name;

protected string no;

protected string s;

public void getdetails(){

Console.WriteLine("Enter Name:");

name = Console.ReadLine();

Console.WriteLine("Enter PhoneNumber:");

no = Console.ReadLine();

}

public void printdetails(){

Console.WriteLine("Name:"+name+"\n");

Console.WriteLine("PhoneNumber:"+no+"\n");

}

public string CalculateFinalGrade(double a){

if(a>=90){s="A";}

else if(a<90 && a>=80){s= "B";}

else if(a<80 && a>=70){s="C";}
  
else if(a<70 && a>=60){s="D";}
  
else if(a<60){s="F";}
  
Console.WriteLine(s);
  
return s;
  
}
  
static void Main() {
int ch;
  
Graduate g1 = new Graduate();
  
underGraduate u1 = new underGraduate();
  
Console.WriteLine("1.Under Graduate\n2.Graduate");
  
Console.WriteLine("Enter Your Choice:");
  
ch = Convert.ToInt32(Console.ReadLine());
  
if(ch == 1)
{
  
u1.getData();
  
u1.printData();
}
  
if(ch == 2)
  
{
  
g1.getData();
  
g1.printData();
  
  
}
}
}
class Graduate : Student // Derived Class
{
int quiz_score,term_score;
  
string s;
  
public void getData(){
  
getdetails();
  
Console.WriteLine("Enter quiz_score(out of 250):");
  
s = Console.ReadLine();
  
quiz_score = Convert.ToInt32(s);
  
  
Console.WriteLine("Enter term_score(out of 50):");
  
s = Console.ReadLine();
  
term_score = Convert.ToInt32(s);
  
double total_percentage = (quiz_score + term_score)/3;
  
s = CalculateFinalGrade(total_percentage);
  
  
}
  
public void printData(){
  
printdetails();
  
Console.WriteLine("Quiz Score:"+quiz_score);
  
Console.WriteLine("Term Score:"+term_score);
  
Console.WriteLine("Total Score:300");
  
Console.WriteLine("Grades:"+s);
}
  
}

class underGraduate : Student
{

int quiz_score;

public void getData(){

getdetails();

Console.WriteLine("Enter quiz_score(out of 250):");

s = Console.ReadLine();

quiz_score = Convert.ToInt32(s);

  
double total_percentage = (quiz_score)/2.5;

s = CalculateFinalGrade(total_percentage);

  
}
public void printData(){

printdetails();

Console.WriteLine("Quiz Score:"+quiz_score);

Console.WriteLine("Total Score:250");

Console.WriteLine("Grade:"+s);
}
  
}

OUTPUT:

Thankyou

Thumbs Up if you satisfy with answer