MATLAB Script and Function Creation 4

Question 1

When MATLAB searches for a function named `foo`, which location is checked first?

Accepted Answer

The current working directory

Answer

MATLAB's search order places the current working directory at the top before checking the path.

Question 2

What is a function handle in MATLAB?

Accepted Answer

A variable that stores a reference to a function for later invocation

Answer

A function handle (created with `@`) stores a reference to a function, enabling it to be passed as an argument or called indirectly.

Question 3

How do you use `inputParser` to validate function inputs in MATLAB?

Accepted Answer

Create an inputParser object, add parameters with addRequired/addOptional, then call parse(p, varargin{:})

Answer

`inputParser` provides a structured way to define, validate, and set defaults for function arguments.

Question 4

What is the role of `varargin` in a MATLAB function definition?

Accepted Answer

It allows the function to accept a variable number of input arguments

Answer

`varargin` is a special input keyword that captures any number of additional arguments into a cell array.

Question 5

What does placing a `%` at the beginning of a line in a MATLAB script or function do?

Accepted Answer

Makes that line a comment that MATLAB ignores during execution

Answer

The `%` symbol begins a comment in MATLAB; everything after it on that line is ignored by the interpreter.

MATLAB - MATLAB Technical Computing Practice Test