The document describes the five main phases of program development: 1) Problem analysis - identifying the problem, data inputs, processes, and outputs 2) Program design - creating flowcharts and designing the user interface 3) Coding - writing the code to implement the program design 4) Testing and debugging - running the program to check for errors 5) Documentation - documenting the program for users and future maintenance

1. PROGRAMMING Program Development Phases 040407 Prepared by: Norhasimah Mohamed, Head Of ICT Panel, SMK Sungai Pusu, Gombak Selangor.

2. Learning Outcomes Describe the five main phases in program development 1. Problem Analysis 2. program Design 3. Coding 4. Testing and Debugging 5. Documentation

3. PROGRAM DEVELOPMENT PHASES

4. PROGRAM DEVELOPMENT PHASES 1. PROBLEM ANALYSIS PHASE programmer will interview the client to find out what the client’s needs are. 2. PROGRAM DESIGN PHASE Based on that, the programmer will design a flow chart that represents the needs of the client.

5. PROGRAM DEVELOPMENT PHASES 3. CODING PHASE Once the flow chart is confirmed, the programmer will perform coding . 4. TESTING AND DEBUGGING PHASE The program will be tested by the users at the client’s site. If there are any errors, the programmer will do a debugging of the program. 5. DOCUMENTATION PHASE After this, the programmer will complete the documentation for the program; this includes the user manual , a clear layout of the input and output records and a program listing.

6. 1. Problem Analysis Interview the client. the programmer identifies the data input, process and output for the program. Identify the possible solution.

7. 2. Design Phase

8. 2. Design Phase Graphic User interface

9. 3. Coding

10. 3. Testing & Debugging

11. 5. Documentation 1. Internal Documentation 2. External Documentation

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

13. 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 program using Visual Basic to help your brother. Your program should have command button to calculate the additional, subtraction, multiplication, and division for at least two integer numbers

14. Programming Development Phase Problem Analysis Program Design Coding Testing and Debugging Documentation

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

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

17. Pseudo code PROGRAM Mathematic_Operations READ the first number READ the second number CALCULATE the sum of number 1 and number 2 PRINT the answer END PROGRAM

18. Flow Chart BEGIN READ number 1 & 2 CALCULATE END PRINT the answer

19. User Interface

20. 3. Coding SCRIPTING 3

21. 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

22. 4. Testing and Debugging RUN & COMPILING 4

23. 5. Documentation Internal Documentation External Documentation 5

24. Task for today Develop one simple program to help your younger brother. Modify the additional formula to use for subtractions, multiplication and division.