GCSE Computer Science: Functions and Procedures
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All Computer Science topics are covered, and each module comes complete with:
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Frequently Asked Questions
What is a function in programming?
A function in programming is a block of code that performs a specific task and returns a value. It takes input arguments, performs an operation on them, and then returns a value. Functions are used to modularize code and make it more organized and efficient.
What is a procedure in programming?
A procedure in programming is a block of code that performs a specific task but does not return a value. Procedures are used to modularize code and make it more organized and efficient. They take input arguments and perform an operation on them.
What is the difference between a function and a procedure?
The main difference between a function and a procedure is that a function returns a value, while a procedure does not. Functions take input arguments, perform a specific operation on them, and then return a value. Procedures take input arguments and perform a specific operation on them, but do not return a value.
How are functions and procedures used in programming?
Functions and procedures are used in programming to modularize code and make it more organized and efficient. They allow programmers to avoid duplicating code and perform common tasks or operations that need to be performed repeatedly throughout a program. Functions and procedures are defined by the programmer and can be called by other parts of the program.
What programming languages support functions and procedures?
Functions and procedures are supported by many programming languages, including C, C++, Java, Python, and JavaScript. In these languages, functions and procedures are defined using specific syntax and are called using function or procedure names followed by parentheses. The input arguments to functions and procedures are typically passed as arguments inside the parentheses.