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Swift User-defined Functions Programs

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 section 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.

List of Swift User-defined Functions Programs

1. Swift program to create a function with no argument and no return value
2. Swift program to create a function with argument but no return value
3. Swift program to create a function with no argument but a return value
4. Swift program to create a function with argument and return value
5. Swift program to create a nested function
6. Swift program to create a nested function with the return value
7. Swift program to return multiple values from the function
8. Swift program to pass an array into a user-defined function
9. Swift program to return an array from a user-defined function
10. Swift program to create a function with default arguments
11. Swift program to implement a verdict function
12. Swift program to create a function with an in-out parameter
13. Swift program to demonstrate the recursion
14. Swift program to calculate the factorial of a given number using recursion
15. Swift program to calculate the power of a given number using recursion
16. Swift program to count the digits of a given number using recursion
17. Swift program to calculate the sum of all digits using recursion