MATLAB Programming and Scripting 3

Question 1

Which MATLAB function converts a string to a number?

Accepted Answer

str2double

Answer

str2double converts a string representation of a number to a double-precision value.

Question 2

What is a cell array in MATLAB primarily used for?

Accepted Answer

Storing heterogeneous data of different types and sizes

Answer

Cell arrays can hold elements of different data types and sizes, unlike standard numeric arrays.

Question 3

In a MATLAB script, what does 'break' do inside a for loop?

Accepted Answer

Exits the loop immediately

Answer

'break' immediately terminates the innermost loop and transfers control to the statement after it.

Question 4

Which syntax correctly accesses the element in row 2, column 3 of matrix M?

Accepted Answer

M(2,3)

Answer

MATLAB uses parentheses with comma-separated indices to access matrix elements.

Question 5

What does 'varargin' allow in a MATLAB function definition?

Accepted Answer

Variable number of input arguments

Answer

'varargin' collects any number of additional input arguments into a cell array.

MATLAB - MATLAB Technical Computing Practice Test