Programming and Scripting Flashcards
7 cards from real MATLAB practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Programming and Scripting flashcards as text
What does the 'nargin' function return inside a MATLAB function?
Answer: Number of input arguments provided by the caller
'nargin' returns the number of input arguments actually passed by the caller at runtime.
Which MATLAB construct is used to handle errors gracefully without stopping execution?
Answer: try-catch block
A try-catch block catches runtime errors and lets execution continue in the catch branch.
In MATLAB, what is the result of evaluating 'mod(7, 3)'?
Answer: 1
mod(7,3) returns 1 because 7 = 2*3 + 1.
How do you define a nested function in MATLAB?
Answer: Place a function inside another function's body before its 'end' keyword
Nested functions are defined inside another function's body and must use explicit 'end' statements.
What does the 'persistent' keyword do when used inside a MATLAB function?
Answer: Retains the variable's value between function calls
A persistent variable retains its value across multiple calls to the same function, similar to a static variable in C.
Which operator is used for element-wise multiplication in MATLAB?
Answer: .*
The '.*' operator performs element-by-element multiplication, unlike '*' which performs matrix multiplication.
What is the output of 'class(int32(5))' in MATLAB?
Answer: int32
The class() function returns the data type name as a string, so it returns 'int32' for an int32 value.