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Passing Arguments Question Example: IS1102 Exam Autumn 2001.

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Presentation on theme: "Passing Arguments Question Example: IS1102 Exam Autumn 2001."— Presentation transcript:

1 Passing Arguments Question Example: IS1102 Exam Autumn 2001

2

3 Break it down 2 Variables declared at module level [General Declarations] cmdCalculate_Click (Event Procedure) Display (Sub Procedure) AddNum (Sub Procedure) IncrementNum (Function Procedure – returns a value)

4 Begin with event procedure (user click) Assigns values to variables Makes Calls to Procedures and Functions

5 AddNum Procedure: Watch out for argument (in brackets) Makes call to the function procedure (IncrementNum) Makes call to sub procedure (Display)

6 Function Procedure (IncrementNum) Changes variable values (watch out for local Vs module variables) Value is returned (IncrementNum)

7 Prints to Picturebox Watch out for NewNum (receiving passed value) If Statement checks value of Num4 and statements executed depending on result

8

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