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lab_3.vb
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lab_3.vb
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Module lab_3
Sub main()
'declaring variables
Dim input_item As String, input_quantity As String, result As String
Dim bool As Boolean = True
While (bool)
Console.WriteLine("Please select any of the following items below. ex: 1, 2, 3 etc...")
Console.WriteLine(menu_items())
input_item = Console.ReadLine()
'check if item selected is a number
If (IsNumeric(input_item)) Then
If (input_item = 1) Then
input_item = 10.99
'ask the user for the quantity
Console.WriteLine("Please select a quantity.")
input_quantity = Console.ReadLine()
'check if item quantity is an number
If (IsNumeric(input_quantity)) Then
If (IsNumeric(input_quantity) And input_quantity >= 1 And input_quantity <= 15) Then
result = input_item * input_quantity
Console.WriteLine("item 1: " & "$" & input_item & " | " & "quantity: " & input_quantity & " | " & "Total: " & "$" & result)
Console.WriteLine()
'ask user if he/she would like to continue
Console.WriteLine("Would you like to select a new item? y/n")
Dim answer As String = Console.ReadLine()
If (answer.ToLower() = "y") Then
ElseIf (answer.ToLower() = "n") Then
Console.WriteLine("Porgram terminated. Goodbye!")
bool = False
Else
Console.WriteLine()
Console.WriteLine("Invalid entry. Porgram restarting...")
End If
Else
Console.WriteLine("Invalid entry for quantity. Please try again.")
Console.WriteLine()
End If
End If
End If
If (input_item = 2) Then
input_item = 5.66
'ask the user for the quantity
Console.WriteLine("Please select a quantity.")
input_quantity = Console.ReadLine()
'check if the item quantity is a number
If (IsNumeric(input_quantity)) Then
If (IsNumeric(input_quantity) And input_quantity >= 1 And input_quantity <= 15) Then
result = input_item * input_quantity
Console.WriteLine("item 2: " & "$" & input_item & " | " & "quantity: " & input_quantity & " | " & "Total: " & "$" & result)
Console.WriteLine()
'ask user if he/she would like to continue
Console.WriteLine("Would you like to select a new item? y/n")
Dim answer As String = Console.ReadLine()
If (answer.ToLower() = "y") Then
ElseIf (answer.ToLower() = "n") Then
Console.WriteLine("Porgram terminated. Goodbye!")
bool = False
Else
Console.WriteLine()
Console.WriteLine("Invalid entry. Porgram restarting...")
End If
Else
Console.WriteLine("Invalid entry for quantity. Please try again.")
Console.WriteLine()
End If
End If
End If
If (input_item = 3) Then
input_item = 7.65
'ask the user for the quantity
Console.WriteLine("Please select a quantity.")
input_quantity = Console.ReadLine()
'check if item quantity is an number
If (IsNumeric(input_quantity)) Then
If (IsNumeric(input_quantity) And input_quantity >= 1 And input_quantity <= 15) Then
result = input_item * input_quantity
Console.WriteLine("item 3: " & "$" & input_item & " | " & "quantity: " & input_quantity & " | " & "Total: " & "$" & result)
Console.WriteLine()
'ask user if he/she would like to continue
Console.WriteLine("Would you like to select a new item? y/n")
Dim answer As String = Console.ReadLine()
If (answer.ToLower() = "y") Then
ElseIf (answer.ToLower() = "n") Then
Console.WriteLine("Porgram terminated. Goodbye!")
bool = False
Else
Console.WriteLine()
Console.WriteLine("Invalid entry. Porgram restarting...")
End If
Else
Console.WriteLine("Invalid entry for quantity. Please try again.")
End If
End If
End If
If (input_item = 4) Then
input_item = 8.64
'ask the user for the quantity
Console.WriteLine("Please select a quantity.")
input_quantity = Console.ReadLine()
'check if item quantity is an number
If (IsNumeric(input_quantity)) Then
If (IsNumeric(input_quantity) And input_quantity >= 1 And input_quantity <= 15) Then
result = input_item * input_quantity
Console.WriteLine("item 4: " & "$" & input_item & " | " & "quantity: " & input_quantity & " | " & "Total: " & "$" & result)
Console.WriteLine()
'ask user if he/she would like to continue
Console.WriteLine("Would you like to select a new item? y/n")
Dim answer As String = Console.ReadLine()
If (answer.ToLower() = "y") Then
ElseIf (answer.ToLower() = "n") Then
Console.WriteLine("Porgram terminated. Goodbye!")
bool = False
Else
Console.WriteLine()
Console.WriteLine("Invalid entry. Porgram restarting...")
End If
Else
Console.WriteLine("Invalid entry for quantity. Please try again.")
Console.WriteLine()
End If
End If
End If
If (input_item = 5) Then
input_item = 5.0
'ask the user for the quantity
Console.WriteLine("Please select a quantity.")
input_quantity = Console.ReadLine()
'check if item quantity is an number
If (IsNumeric(input_quantity)) Then
If (IsNumeric(input_quantity) And input_quantity >= 1 And input_quantity <= 15) Then
result = input_item * input_quantity
Console.WriteLine("item 5: " & "$" & input_item & " | " & "quantity: " & input_quantity & " | " & "Total: " & "$" & result)
Console.WriteLine()
'ask user if he/she would like to continue
Console.WriteLine("Would you like to select a new item? y/n")
Dim answer As String = Console.ReadLine()
If (answer.ToLower() = "y") Then
ElseIf (answer.ToLower() = "n") Then
Console.WriteLine("Porgram terminated. Goodbye!")
bool = False
Else
Console.WriteLine()
Console.WriteLine("Invalid entry. Porgram restarting...")
End If
Else
Console.WriteLine("Invalid entry for quantity. Please try again.")
Console.WriteLine()
End If
End If
End If
If (input_item = 6) Then
input_item = 7.2
'ask the user for the quantity
Console.WriteLine("Please select a quantity.")
input_quantity = Console.ReadLine()
'check if item quantity is an number
If (IsNumeric(input_quantity)) Then
If (IsNumeric(input_quantity) And input_quantity >= 1 And input_quantity <= 15) Then
result = input_item * input_quantity
Console.WriteLine("item 6: " & "$" & input_item & " | " & "quantity: " & input_quantity & " | " & "Total: " & "$" & result)
Console.WriteLine()
'ask user if he/she would like to continue
Console.WriteLine("Would you like to select a new item? y/n")
Dim answer As String = Console.ReadLine()
If (answer.ToLower() = "y") Then
ElseIf (answer.ToLower() = "n") Then
Console.WriteLine("Porgram terminated. Goodbye!")
bool = False
Else
Console.WriteLine()
Console.WriteLine("Invalid entry. Porgram restarting...")
End If
Else
Console.WriteLine("Invalid entry for quantity. Please try again.")
Console.WriteLine()
End If
End If
End If
If (input_item = 7) Then
input_item = 10.0
'ask the user for the quantity
Console.WriteLine("Please select a quantity.")
input_quantity = Console.ReadLine()
'check if item quantity is an number
If (IsNumeric(input_quantity)) Then
If (IsNumeric(input_quantity) And input_quantity >= 1 And input_quantity <= 15) Then
result = input_item * input_quantity
Console.WriteLine("item 7: " & "$" & input_item & " | " & "quantity: " & input_quantity & " | " & "Total: " & "$" & result)
Console.WriteLine()
'ask user if he/she would like to continue
Console.WriteLine("Would you like to select a new item? y/n")
Dim answer As String = Console.ReadLine()
If (answer.ToLower() = "y") Then
ElseIf (answer.ToLower() = "n") Then
Console.WriteLine("Porgram terminated. Goodbye!")
bool = False
Else
Console.WriteLine()
Console.WriteLine("Invalid entry. Porgram restarting...")
End If
Else
Console.WriteLine("Invalid entry for quantity. Please try again.")
Console.WriteLine()
End If
End If
End If
Else
Console.WriteLine("invalid entry. Please try again (be sure to select a number).")
Console.WriteLine()
End If
End While
Console.Read()
End Sub
Function menu_items() As String
Dim items As String
items = "item 1 : 10.99 " & vbCrLf & "item 2 : 5.66 " & vbCrLf & "item 3 : 7.65 " & vbCrLf & "item 4 : 8.64 " & vbCrLf & "item 5 : 5.00 " & vbCrLf & "items 6 : 7.20 " & vbCrLf & "items 7 : 10.00"
Return items
End Function
End Module