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La5 Programming


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La5 Programming

  1. 1. PROGRAMMING Program Development 040407 Prepared by: Norhasimah Mohamed, Head Of ICT Panel, SMK Sungai Pusu, Gombak Selangor.
  2. 2. Learning Outcomes <ul><li>Apply program development phases to solve problems </li></ul><ul><li>Develop a program </li></ul>
  3. 3. Situation <ul><li>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. </li></ul><ul><li>Your system should have function button to calculate the additional, subtraction, multiplication, and division for at least two integer numbers </li></ul>
  4. 4. Programming Development Phase <ul><li>Problem Analysis </li></ul><ul><li>Program Design </li></ul><ul><li>Coding </li></ul><ul><li>Testing and Debugging </li></ul><ul><li>Documentation </li></ul>
  5. 5. 1. Problem Analysis <ul><li>What the problem? </li></ul><ul><li>What the input, process, and output? </li></ul><ul><li>What the formula on how to calculate the mathematic operations? </li></ul>1
  6. 6. 2. Program Design <ul><li>Write the pseudo code </li></ul><ul><li>Write flow chart </li></ul><ul><li>Design user interface </li></ul>2
  7. 7. Pseudo code <ul><li>PROGRAM Mathematic_Operations </li></ul><ul><li>READ the first number </li></ul><ul><li>READ the second number </li></ul><ul><li>READ commandbutton Add </li></ul><ul><li>CALCULATE the sum of number 1 and number 2 </li></ul><ul><li>PRINT the answer for Addition </li></ul><ul><li>END PROGRAM </li></ul>
  8. 8. Flow Chart START READ number 1 & 2 CALCULATE STOP/END PRINT the answer
  9. 9. User Interface
  10. 10. 3. Coding <ul><li>SCRIPTING </li></ul>3
  11. 11. Coding <ul><li>‘ formula for additional (internal documentation) </li></ul><ul><li>Private Sub cmdAdd_Click() </li></ul><ul><li>Dim Number1, Number2 As Integer </li></ul><ul><li>Number1 = txtNumber1.Text </li></ul><ul><li>Number2 = txtNumber2.Text </li></ul><ul><li>txtSum = Number1 + Number2 </li></ul><ul><li>End Sub </li></ul>
  12. 12. 4. Testing and Debugging <ul><li>RUN & COMPILING </li></ul>4
  13. 13. 5. Documentation <ul><li>Internal Documentation </li></ul><ul><li>External Documentation </li></ul>5
  14. 14. Exercises <ul><li>Modify the additional formula to use for subtractions, multiplication and division. </li></ul>