MATLAB MATLAB String Operations and File I/O 3

Question 1

Which MATLAB function checks if two strings are equal?

Accepted Answer

strcmp

Answer

isequal

Answer

streq

Answer

eq

Question 2

What does `regexp(str, pattern)` return in MATLAB?

Accepted Answer

Starting indices of matches of the regular expression pattern in str

Answer

A logical array of matching characters

Answer

The matched substrings only

Answer

The number of matches found

Question 3

How do you close a file in MATLAB after using fopen?

Accepted Answer

fclose(fid)

Answer

close(fid)

Answer

fend(fid)

Answer

fileclose(fid)

Question 4

What function imports data from a space-delimited text file into a matrix in MATLAB?

Accepted Answer

All of the above can work

Answer

load

Answer

readmatrix

Answer

dlmread

Question 5

What does `sprintf('%05.2f', 3.7)` return in MATLAB?

Accepted Answer

'03.70'

Answer

'3.700'

Answer

' 3.70'

Answer

'003.7'

Question 6

Which MATLAB function trims leading and trailing whitespace from a string?

Accepted Answer

strtrim

Answer

trim

Answer

strip

Answer

deblank