In programming, functions and subroutines are fundamental building blocks that enable the creation of reusable code segments. Subroutines are blocks of code that carry out a sequence of instructions without always returning a value, whereas functions are blocks of code that carry out a defined purpose and return a value.
A common usage for functions is to condense logic into a manageable, reusable unit within a programme. They have the ability to return a value to the caller code and receive input arguments. In contrast, a series of related instructions that must be carried out in order is grouped together and executed sequentially using subroutines.
Developers can work with and alter code more easily when functions and subroutines are used to enhance code organisation, readability, and maintainability. Programmers can efficiently use these structures to create scalable and effective software solutions by knowing the differences between functions and subroutines.
