MATLAB MATLAB String Operations and File I/O

Question 1

Which MATLAB function concatenates two strings?

Accepted Answer

strcat

Answer

strcat concatenates character arrays or string arrays, removing trailing whitespace from character array inputs.

Question 2

How do you convert a number to a string in MATLAB?

Accepted Answer

num2str(x)

Answer

num2str converts a numeric value to a character array representation of that number.

Question 3

What function reads a text file line by line in MATLAB?

Accepted Answer

fgetl

Answer

fgetl reads one line from a file and removes the newline character, returning -1 at end of file.

Question 4

Which MATLAB function searches for a pattern in a string and returns its position?

Accepted Answer

strfind

Answer

strfind returns the starting indices of all occurrences of a pattern within a string.

Question 5

What does `textscan` do in MATLAB?

Accepted Answer

Reads formatted data from a string or file into a cell array

Answer

textscan reads formatted data from a string or file, parsing it into a cell array according to format specifiers.

MATLAB - MATLAB Technical Computing Practice Test