PROGRAMMING Program Development.

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Presentation transcript:

PROGRAMMING Program Development

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 Problem Analysis Program Design Coding Testing and Debugging Documentation

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

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

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

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

User Interface

3. Coding 3 SCRIPTING

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

4. Testing and Debugging 4 RUN & COMPILING

5. Documentation 5 Internal Documentation External Documentation

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