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Pearson BTEC International Level 3 Qualifications in Information Technology –
Specification – Issue 3 – September 2022 © Pearson Education Limited 2022
66
A3 Features and characteristics of programming languages
The uses and applications of different types of high- and low-level programming
languages, developed to assist in the solution of particular problems, such as:
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procedural, e.g. C, Perl, Python
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object-orientated, e.g. C++, C#, Java
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event-driven, e.g. Visual Basic
®
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machine, e.g. Assembler
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mark-up, e.g. HTML.
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Factors to compare and contrast in programming languages, including:
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hardware and software needed for running and developing a program
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special devices required
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performance
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preferred application areas
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development time
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ease of development.
A4 Constructs and techniques and their implementation in different languages
The constructs and techniques involved in the use of programming languages.
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Programming languages, constructs and techniques, including:
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command words
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constants and variables, local and global variables
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data types – character, string, integer, real, Boolean
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statements – assignment, input and output, sequence, iteration, selection
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logical operations.
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Other constructs, such as:
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subroutines, functions and procedures
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string handling, including examining single characters and substrings
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arrays – two-dimensional and three-dimensional, splitting and joining
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file handling – open, read, write, close, database
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data structures
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event handling.
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Documentation of code.
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