IGCSE Computer Science (0478) — October–November 2023, Paper 23

Tick (✓) one box to show which term is an example of a verification check. [ ] A Double entry check [ ] B Format check [ ] C Length check [ ] D Presence check

Tick (✓) one box to show which library routine returns the remainder of a division. [ ] A DIV [ ] B MOD [ ] C RANDOM [ ] D ROUND

Four pseudocode descriptions and five pseudocode keywords are shown. Draw one line to link each pseudocode description to the most appropriate pseudocode keyword. Not all…

A programmer is writing a data entry program for booking theatre seats. The program needs to accept only whole numbers that are greater than or equal to one and less than or equal…

An algorithm has been written in pseudocode to check if a new password is in a list of previously used passwords OldList[]. If the password is not found, the new password will be…

There are three descriptions of logic gates. Each logic gate has two inputs A and B with one output X. Identify each logic gate and complete a truth table for each. The only time…

A program uses both local variables and global variables. Describe two differences between local variables and global variables.

This is an algorithm to find if a batch of parts has been manufactured successfully. Flowchart logic: Accept ← 0; Reject ← 0; loop: INPUT PartOK; IS PartOK = 'Y'? If No, Reject ←…

A sanctuary for pheasants has set up a new database table called PheasantList to store details of the different species of bird. Fields: Species, Description, NumberBirds,…

A weather station takes temperature readings once an hour for a week. These temperatures are stored in a 2D array Temperatures[]. Each column contains 24 readings for a single day…