What Happens ...

• A procedure call “makes it happen”

• Substitution Rule: The procedure call operates as if the definition replaced the call and the actual parameters replace the formal parameters

…

Call convertC2F(38, degreesF)

...

Code of a VB program

degreesF = 9 * 38 / 5 + 32

Private Sub convertC2F (tempInC As Integer, tempInF As Integer)

tempInF = 9 * tempInC / 5 + 32

End Sub

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