Post on 29-Nov-2014
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PROGRAMMING
Program Development
040407
Prepared by: Norhasimah Mohamed, Head Of ICT Panel, SMK Sungai Pusu, Gombak Selangor.
Learning Outcomes
• Apply program development phases to solve problems
• Develop a program
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
Programming Development Phase
1. Problem Analysis
2. Program Design
3. Coding
4. Testing and Debugging
5. Documentation
1. Problem Analysis
• What the problem?
• What the input, process, and output?
• What the formula on how to calculate the mathematic operations?
2. Program Design
• Write the pseudo code
• Write flow chart
• Design user interface
Pseudo code
PROGRAM Mathematic_OperationsREAD the first numberREAD the second numberREAD commandbutton Add
CALCULATE the sum of number 1 and number 2PRINT the answer for Addition
END PROGRAM
Flow Chart
START
READ number 1 & 2
CALCULATE
STOP/END
PRINT the answer
User Interface
3. Coding
• SCRIPTING
Coding
‘formula for additional (internal documentation)
Private Sub cmdAdd_Click()Dim Number1, Number2 As Integer Number1 = txtNumber1.Text Number2 = txtNumber2.Text txtSum = Number1 + Number2End Sub
4. Testing and Debugging
• RUN & COMPILING
5. Documentation
• Internal Documentation
• External Documentation
Exercises
• Modify the additional formula to use for subtractions, multiplication and division.