Page 161 - Computer

Item Keyword Description

5 COMPUTE, This is used to calculate the results of an
CALCULATE or expression Computer Science
DETERMINE
FOR ONLINE READING ONLY
6 SET It is used to initialise values or assign a value
to a variable
7 INCREMENT It is used when you want to increase the value
of a variable by one
8 DECREMENT This keyword is meant to reduce the value of
a variable by one.
9 END Used to indicate the endpoint of the program
or a process

Rules for writing pseudocode (iv) Show indentation for the
(i) Only one statement should be written pseudocode. For example, the
for each line, where each statement pseudocodes used to find the
should represent a single action. minimum of the two numbers,
(ii) The input, output, and process can be indicated as follows.
statements must be clearly stated
using standard keywords, such as BEGIN
READ, PRINT, WRITE, DISPLAY, READ num1, num2
and RETURN. For example, If (num1<num2)

START SET Min=num1
READ a, b, c Else
c = a+b SET Min=num2
PRINT c
END PRINT Min
(iii) Each initial keyword should END
be capitalised. For example,
pseudocodes are used to calculate (v) Pseudocode should clearly
the area of a triangle. show the start and end of exe-

START cutable statements and control
READ base, height, area structures.
COMPUTE: (vi) The statements should be short,
area=0.5*base*height clear, and readable.
PRINT area
END

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Student’s Book Form One