MATLAB Functions and Flow Control 4

Question 1

What type does `varargin` produce inside a MATLAB function?

Accepted Answer

A cell array

Answer

`varargin` collects extra input arguments into a cell array that can be indexed with {}.

Question 2

Which MATLAB construct should be used to catch and handle runtime errors?

Accepted Answer

try...catch

Answer

The `try...catch` block lets you intercept runtime errors and execute alternative code.

Question 3

What does `error('message')` do in MATLAB?

Accepted Answer

Throws a runtime error and halts execution

Answer

`error()` raises an exception that stops execution unless caught by a try-catch block.

Question 4

In MATLAB, how do you pass a function as an argument to another function?

Accepted Answer

Using a function handle created with @

Answer

A function handle `@funcname` creates a reference to the function that can be passed as an argument.

Question 5

What is the result of calling a function handle `f = @(x) x + 1` with `f(4)`?

Accepted Answer

5

Answer

The anonymous function adds 1 to its input, so `f(4)` returns 4 + 1 = 5.

MATLAB - MATLAB Technical Computing Practice Test