Document page
Computer Science IGCSEPDF 114
142 pagesrevision 46930
PDF 114
Page image rendered from the stored file at 110 dpi; it sharpens as you zoom. Outlines are placed from each region’s stored position on the page (612 × 792 pt).
readable
Source of this text: embedded text layer. The better of the embedded text and OCR is kept.
CALL (value1, value2, ...)
<identifier> //calling the procedure
FUNCTION <identifier>() RETURNS <data type>
<statement(s)>
ENDFUNCTION
PROCEDURE Tip (price : REAL)
DECLARE tipamount
tipamount ← value * 0.2
OUTPUT “The tip amount is “, tipamount
ENDPROCEDURE
CALL Tip(70)
Function with parameters
Function without parameters
Q. (a) Define a procedure named Average that calculates the average of 2 numbers.
(b) Write the pseudocode to use a procedure named Total that passes the values 25
and 50 to the procedure.
Functions:
● It is a subroutine that always returns a value.
● It can have up to 3 parameters according to the syllabus.
● The variables used within it are local variables.
● It is called with an expression.
Q. Define and call a procedure that calculates the tip on an inputted value. (the tip is set
at 20%). Use an input of 70.