Persembahan Pembangunan Program

1. PROGRAMMING
Program Development

2. Learning Outcomes
• Apply program development phases to
solve problems
• Develop a program

3. Situation
• Your younger brother has a problem with a
basic mathematic operations like addition,
subtraction, multiplication, and division.
Your parents ask you to develop one
simple system using Visual Basic to help
your brother.
• Your system should have function button to calculate the additional,
subtraction, multiplication, and division for at least two integer
numbers

4. Programming Development Phase
1. Problem Analysis
2. Program Design
3. Coding
4. Testing and Debugging
5. Documentation

5. 1. Problem Analysis
• What the problem?
• What the input, process, and output?
• What the formula on how to calculate the
mathematic operations?

6. 2. Program Design
• Write the pseudo code
• Write flow chart
• Design user interface

7. Pseudo code
PROGRAM Mathematic_Operations
READ the first number
READ the second number
READ commandbutton Add
CALCULATE the sum of number 1 and
number 2
PRINT the answer for Addition
END PROGRAM

8. Flow Chart
START
READ number 1 & 2
CALCULATE
STOP/END
PRINT the answer

9. User Interface

10. 3. Coding
• SCRIPTING

11. Coding
‘formula for additional (internal documentation)
Private Sub cmdAdd_Click()
Dim Number1, Number2 As Integer
Number1 = txtNumber1.Text
Number2 = txtNumber2.Text
txtSum = Number1 + Number2
End Sub

12. 4. Testing and Debugging
• RUN & COMPILING

13. 5. Documentation
• Internal Documentation
• External Documentation

14. Exercises
• Modify the additional formula to use for
subtractions, multiplication and division.