1. Visual Basic I Programming
CSC 162
Visual Basic I Programming

2. Elements of a Program Prologue (or Heading) Global declarations
Functions / Procedures
Event procedures

3. Prologue Program Name Author Date Course/Section Program Description:
The first line is a general description of the programs purpose. The remaining lines give detail about the program
One Blank Line
Pseudocode
A detailed guide on how to format the pseudocode will be provided next

4. Pseudocode Not a real programming language
Combination of English and code-like statements
Consists of only executable statements
Allows for designing structured programs
Can then be turned into actual computer code

5. Pseudocode Style In sequence and level of detail No blank lines
Should match code exactly (not mean line for line)
In sequence and level of detail
No blank lines
Start with: BEGIN Program Name
Finish with: END Program Name
Indentation
After every flow control statement and after BEGIN
Always indent 3 spaces
Use all capital letters for flow control words (IF, ELSE, FOR, WHILE, BEGIN, and END)
All Flow control statements need an END
Statement after an END should line up with that END
Each END should line up with its beginning (Un-indent)

6. Prologue Example
'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
'Program Name: Test Average
'Author: Timothy D. Stedman
'Date: September 2003
'Course/Section: CSC
'Program Description:
' This program is designed to determine the average of three test
' scores. The user will enter the values into three text boxes.
' When the "Calculate" button is pressed, the program will compute
' the average and display the results in a label. When the user
' presses the "Exit" button, the program will end. '
'BEGIN Test Average
' Input three grades
' Compute average of the test grades
' Display the average
'END Test Average

7. Comparison Operators = Equal <> Not equal < Less than >
Greater than
<=
Less than or equal
>=
Greater than or equal

8. Logical Operators
Not
Negation
And
Logical and Or
Logical or

9. If Structures
If/Then
If/Then/Else
If/Then/ElseIf

10. If/Then
If intGrade < 65 Then
Print "Fail"
End If

11. If/Then/Else If intGrade >= 65 Then Print "Pass" Else Print "Fail"
End If

12. If/Then/ElseIf If sngGPA >= 3.9 Then Print "Summa Cum Laude"
ElseIf sngGPA >= 3.7 Then
Print "Magna Cum Laude"
ElseIf sngGPA >= 3.5 Then
Print "Cum Laude"
Else
Print "No graduation honors"
End If

13. InputBox Function InputBox(Prompt, Title)
The value from the InputBox needs to be assigned to a variable.
intGrade = Val(InputBox("Enter grade", "Grade"))

14. Pseudocode Problems
Description: Input three numbers and print them out in ascending order
Description: Input three sides of a triangle. Display a message indicating if the the three sides can actually for a triangle or not.
Description: Input three sides of a triangle and determine if the three sides from a right triangle, an isosceles triangle or an equilateral triangle.
Description: Input the number of minutes parked in a parking garage. Determine and display the number of hours parked. If the vehicle is parked for any part of an hour, it is charged for the entire hour.
Description: Input one exam score. Check to see if the exam score is between 0 and 100. Print a message indicating the exam score is in range or out of range.