Functions are the set of statements that are used to perform a specific task. In any programming language, functions are of two types: 1) Library functions – the functions are which are pre-defined and we cannot change their definition, 2) User-defined functions – the functions which are defined by the programmer.

In Swift programming language, we can also define our own functions and can use them anywhere in the program. In Swift 4, a function is defined by the func keyword.

This study list contains solved Swift user-defined functions programs, practice these programs to learn the concept of functions, these programs contain the solved code, outputs, and the detailed explanation of the statements, functions used in the Swift user-defined functions programs.