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Quiz 2. Quiz 2 What is output (5 Marks) [8 min] X = 987 Y = X Z = 0 Do Do While (Y > 0) Z = Z + Y Mod 10 Y = Y \ 10 Loop Y = Z Z = 0 Loop Until (Y < 10)

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Presentation on theme: "Quiz 2. Quiz 2 What is output (5 Marks) [8 min] X = 987 Y = X Z = 0 Do Do While (Y > 0) Z = Z + Y Mod 10 Y = Y \ 10 Loop Y = Z Z = 0 Loop Until (Y < 10)"— Presentation transcript:

1 Quiz 2

2 Quiz 2 What is output (5 Marks) [8 min] X = 987 Y = X Z = 0 Do Do While (Y > 0) Z = Z + Y Mod 10 Y = Y \ 10 Loop Y = Z Z = 0 Loop Until (Y < 10) Z = X * 10 + Y MsgBox ("X = " & X & Chr(13) & _ "Y = " & Y & Chr(13) & _ "Z = " & Z)

3 Example 2 Travel Expenses

4 You need to calculate travel expenses for a company. The company assigns travel codes for each trip –TO – Trip to Toronto –MO – Trip to Montreal –KI – Trip to Kingston –RS – Research Trip –MK – Marketing Trip

5 Travel Expenses Since travel to the cities of Toronto Montreal and Kingston are frequent, a flat rate of the following: –Toronto - $70 + $50 per night –Montreal - $50 + $40 per night –Kingston - $40 + $40 per night

6 Travel Expenses Research Trips have the following calculation –$0.05 per km traveled –$60 per night stayed –$10 per meal

7 Travel Expenses Marketing Trips have the following calculation –$0.05 per km traveled –$80 per night stayed –$25 per meal

8 Algorithm Name Travel Given Code, KM, Nights, Meals Results – Refund Intermediates – None Definition Refund := Travel (Code, KM, Nights, Meals)

9 Algorithm Get Code Get KM, Nights, Meals If (Code = TO) Refund = * Nights Else if (Code = MO) Refund = * Nights Else if (Code = KI) Refund = * Nights Else if (Code = RS) Refund = 0.5 * KM + 60 * Nights + 10 * Meals Else if (Code = MK) Refund = 0.5 * KM + 80 * Nights + 25 * Meals Else Refund = -999 Give Refund

10 Write as a simple Sub( ) Get Code Get KM, Nights, Meals If (Code = TO).... Else Refund = -999 Give Refund Sub Trav1() Dim Code as String*2 Dim KM as Integer Dim Nights as Integer Dim Meals as Integer Dim Refund as Currency Code = InputBox("Code") KM = InputBox("KM") Nights = InputBox("Nights") Meals = InputBox("Meals") If (Code = "TO") Then Refund = * Nights ElseIf (Code = "MO") Then Refund = * Nights ElseIf (Code = "KI") Then Refund = * Nights ElseIf (Code = "RS") Then Refund = 0.5 * KM + 60 * Nights + 10 * Meals ElseIf (Code = "MK") Then Refund = 0.5 * KM + 80 * Nights + 25 * Meals Else Refund = End If MsgBox("R = " & Refund) End Sub

11 Write as Sub( param ) Get Code Get KM, Nights, Meals If (Code = TO)..... Else Refund = -999 Give Refund Sub Trav2( ByVal Code as String, _ ByVal KM as Integer, _ ByVal Nights as Integer, _ ByVal Meals as Integer, _ ByRef Refund as Currency) If (Code = "TO") Then Refund = * Nights ElseIf (Code = "MO") Then Refund = * Nights ElseIf (Code = "KI") Then Refund = * Nights ElseIf (Code = "RS") Then Refund = 0.5 * KM + 60 * Nights + 10 * Meals ElseIf (Code = "MK") Then Refund = 0.5 * KM + 80 * Nights + 25 * Meals Else Refund = End If End Sub

12 Write as Function( param ) Version 1 Dim Result Get Code Get KM, Nights, Meals If (Code = TO).... Else Refund = -999 Give Refund Function Trav3( ByVal Code as String, _ ByVal KM as Integer, _ ByVal Nights as Integer, _ ByVal Meals as Integer) as Currency Dim Refund as Currency If (Code = "TO") Then Refund = * Nights ElseIf (Code = "MO") Then Refund = * Nights ElseIf (Code = "KI") Then Refund = * Nights ElseIf (Code = "RS") Then Refund = 0.5 * KM + 60 * Nights + 10 * Meals ElseIf (Code = "MK") Then Refund = 0.5 * KM + 80 * Nights + 25 * Meals Else Refund = End If Trav3 = Refund End Function

13 Write as Function( param ) Version 2 without Dim Get Code Get KM, Nights, Meals If (Code = TO)... Else Refund = -999 Give Refund Function Trav4( ByVal Code as String, _ ByVal KM as Integer, _ ByVal Nights as Integer, _ ByVal Meals as Integer) as Currency If (Code = "TO") Then Trav4 = * Nights ElseIf (Code = "MO") Then Trav4 = * Nights ElseIf (Code = "KI") Then Trav4 = * Nights ElseIf (Code = "RS") Then Trav4 = 0.5 * KM + 60 * Nights + 10 * Meals ElseIf (Code = “MK") Then Trav4 = 0.5 * KM + 80 * Nights + 25 * Meals Else Trav4 = End If End Function

14 Utilizing the Sub (Param) Sub Main1() Dim C as String*2 Dim K as Integer Dim N as Integer Dim M as Integer Dim R as Currency C = InputBox("C") K = InputBox("K") N = InputBox("N") M = InputBox ("M") Call Trav2(C, K, N, M, R) MsgBox("Refund = "& R) End Sub

15 Utilizing using Function Sub Main2() Dim C as String*2 Dim K as Integer Dim N as Integer Dim M as Integer Dim R as Currency C = InputBox("C") K = InputBox("K") N = InputBox("N") M = InputBox ("M") ‘Use Either one of the following R = Trav3(C, K, N, M) ‘ R = Trav4(C, K, N, M) MsgBox("Refund = "& R) End Sub

16 Excel Worksheet ABCDEF 1EmpCodekmNightsMealsRefund 2123TO3?? 3234RE12848??

17 Using Excel Only What would the Function to be written in F2 to be copied down? = if (B2 = “TO”, * D2, if(B2 = “MO”, * D2, if(B2 = “KI”, * D2, if (B2 = “RS”, 0.05 * C * D * E2, if(B2 = “MK”, 0.05 * C * D * E2, -9999))))) What if Research department changes its rules (say $20 per meal) or corporate changes base rate for Toronto?

18 Using Excel with Visual Basic What what the function to be written in F2 to be copied down? = Trav3(B2, C2, D2, E2) Maintenance is easier under Visual Basic Note if Constants were used, maintenance becomes very ease


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