Can somebody look at my code and make any needed corrections. its a calculator t

Question

Can somebody look at my code and make any needed corrections. its a calculator that displays an average baseed on the entered grades. Public Class StdntGrades DI am grade, sum, average As Double DI am numberofgrades As Integer = 2 Private Sub btnGrade_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnGrade.Click Input(Name) Input(Grade) End Sub Console.WriteLine("Please enter a grade") grade = Convert.ToDouble(Console.ReadLine()) sum += grade average = sum numberofgrades Function determineGrade() As String If average >= 90 Then Console.WriteLine("Grade is an A ") ElseIf average >= 80 And average < 90 Then Console.WriteLine("Grade is an B!") ElseIf average >= 70 And average < 80 Then Console.WriteLine("Grade is a C!") ElseIf average >= 60 And average < 70 Then Console.WriteLine("Grade is a D!") ElseIf average < 60 Then Console.WriteLine("Grade is an F!") End If Return grade End Function End Class

Explanation / Answer

Handle the exception when user will enter the grade. User can enter anything like digit or alphabet, You should be handling the exception using try catch.

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