22/MJ/2016

22/MJ/2016

2210 Computer Science O'Level

Multiple Select

Which line needs to be improved?

• 1 Total = 0

• 3 REPEAT

• 6 PRINT Total

• 2 Counter = 0

Improvements that Could Be Made​

• ​use FOR … NEXT instead of REPEAT … UNTIL

• ​Move PRINT to after the end of the loop

• ​Move PRINT to after the end of the loop

QBasic Program Codes​

​

Multiple Choice

Choose the correct example for Assignment type.

• FOR X = 1 TO 10

• READ X

• PRINT X

• X = Y + Z

Multiple Choice

Choose the correct example for Iteration type.

• FOR X = 1 TO 10

• READ X

• PRINT X

• X = Y + Z

Multiple Choice

Choose the correct example for Input type.

• FOR X = 1 TO 10

• READ X

• PRINT X

• X = Y + Z

Multiple Choice

Choose the correct example for Output type.

• FOR X = 1 TO 10

• READ X

• PRINT X

• X = Y + Z

Open Ended

A programmer writes a program to store a patient’s temperature every hour for a day. State the data structure that would be most suitable to use and give the reason for your choice.

​Reasons to use an Array in Programming

​to simplify programming

​

to make programs shorter

to identify the same member across the arrays (using index)

Multiple Select

What are the selection statements?

• do-loop until

• while-wend loop

• select-case

• if-else

Multiple Choice

How many fields are in each record?

• 8

• 9

• 6

• 7

Multiple Choice

Which field you would choose for the primary key?

• Description

• Brochure Number

• Number of Seats

• Material

• Price in $

Multiple Choice

The primary key must uniquely identify each record.

• TRUE

• FALSE

Multiple Choice

Data type for DESCRIPTION

• text

• number/integer

• currency/real

• boolean

Multiple Choice

Data type for BROCHURE NUMBER

• text

• number/integer

• currency/real

• boolean

Multiple Choice

Data type for NUMBER OF SEATS

• text

• number/integer

• currency/real

• boolean

Multiple Choice

Data type for NUMBER OF PIECES

• text

• number/integer

• currency/real

• boolean

Multiple Choice

Data type for NUMBER OF PIECES

• text

• number/integer

• currency/real

• boolean

Multiple Choice

Data type for MATERIAL

• text

• number/integer

• currency/real

• boolean

Multiple Choice

Data type for COLOUR

• text

• number/integer

• currency/real

• boolean

Multiple Select

Data type for PRICE

• text

• number/integer

• currency/real

• boolean

Open Ended

What will be the output of this QBE grid?