Learning objective
Arithmetic operations in a programming language: Be familiar with and be able to use: • addition • subtraction • multiplication • real/float division • integer division, including remainders • exponentiation • rounding • truncation. 42
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Programming
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Arithmetic operations in a programming language
Aqa A Level Computer ScienceFundamentals of programming
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Quick explanation
Arithmetic operations in a programming language: Be familiar with and be able to use: • addition • subtraction • multiplication • real/float division • integer division, including remainders • exponentiation • rounding • truncation. 42
- This point belongs to Programming, especially Arithmetic operations in a programming language.
- You need to be able to arithmetic operations in a programming language: Be familiar with and be able to use: • addition • subtraction • multiplication • real/float division • integer division, including remainders • exponentiation • rounding • truncation. 42.
- Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.
Why it matters
This objective helps connect Arithmetic operations in a programming language to exam-style questions, flashcards, and revision notes for Programming.
Quick student answer
In Python 3, what is the result of 17 // 5?
Direct answer
3
Key terms
- Integer division: Division that produces the whole-number part of a division and does not include the fractional part.
- Remainder: The amount left over after one integer has been divided by another using complete whole-number divisions.
Common trap
Confusing integer division with the remainder: Use // for the integer-division result, which is 3, and % for the remainder, which is 2.
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Related learning objectives
- Data types: Understand the concept of a data type. Understand and use the following appropriately: • integer • real/float • Boolean • character • string • date/time • pointer/reference • records (or equivalent) • arrays (or equivalent). Variables declared as a pointer or reference data type are used as stores for memory addresses of objects created at runtime, ie dynamically. Not all languages support explicit pointer types, but students should have an opportunity to understand this data type. Define and use user-defined data types based on language-defined (built-in) data types.
Data types
- Programming concepts: Use, understand and know how the following statement types can be combined in programs: • variable declaration • constant declaration • assignment • iteration • selection • subroutine (procedure/function). The three combining principles (sequence, iteration/repetition and selection/choice) are basic to all imperative programming languages. Use definite and indefinite iteration, including indefinite iteration with the condition(s) at the start or the end of the iterative structure. A theoretical understanding of condition(s) at either end of an iterative structure is required, regardless of whether they are supported by the language being used. Use nested selection and nested iteration structures. Use meaningful identifier names and know why it is important to use them.
Programming concepts
- Relational operations in a programming language: Be familiar with and be able to use: • equal to • not equal to • less than • greater than • less than or equal to • greater than or equal to.
Relational operations in a programming language
- Boolean operations in a programming language: Be familiar with and be able to use: • NOT • AND • OR • XOR.
Boolean operations in a programming language
- Constants and variables in a programming language: Be able to explain the differences between a variable and a constant. Be able to explain the advantages of using named constants.
Constants and variables in a programming language