Logical operators (&, |, ~) in MATLAB - Mini Project: Build & Apply

Logical Operators (&, |, ~) in MATLAB

📖 Scenario: You are working with a simple security system that checks multiple conditions to decide if access should be granted.

🎯 Goal: Build a MATLAB script that uses logical operators & (AND), | (OR), and ~ (NOT) to evaluate access conditions.

📋 What You'll Learn

Create logical variables representing conditions

Use logical AND & to combine conditions

Use logical OR | to combine conditions

Use logical NOT ~ to invert a condition

Display the final access decision

💡 Why This Matters

🌍 Real World

Logical operators are used in security systems, decision making, and filtering data based on multiple conditions.

💼 Career

Understanding logical operators is essential for programming, data analysis, and automation tasks in many technical jobs.

1

Create initial logical variables

Create three logical variables in MATLAB: hasKey set to true, knowsPassword set to false, and isAdmin set to true.

MATLAB

% Your code here to create logical variables hasKey, knowsPassword, and isAdmin

Need a hint?

Use true and false to assign logical values in MATLAB.

2

Add a condition variable for access by key and password

Create a new logical variable called accessByKeyAndPassword that is true only if both hasKey and knowsPassword are true using the logical AND operator &.

MATLAB

hasKey = true;
knowsPassword = false;
isAdmin = true;
% Your code here to create accessByKeyAndPassword using &

Need a hint?

Use & to combine two logical variables for AND.

3

Create a condition for access by key or admin

Create a logical variable called accessByKeyOrAdmin that is true if either hasKey or isAdmin is true using the logical OR operator |.

MATLAB

hasKey = true;
knowsPassword = false;
isAdmin = true;
accessByKeyAndPassword = hasKey & knowsPassword;
% Your code here to create accessByKeyOrAdmin using |

Need a hint?

Use | to combine two logical variables for OR.

4

Display the final access decision using NOT operator

Create a logical variable called noAccess that is the opposite of accessByKeyOrAdmin using the logical NOT operator ~. Then display noAccess using disp.

MATLAB

hasKey = true;
knowsPassword = false;
isAdmin = true;
accessByKeyAndPassword = hasKey & knowsPassword;
accessByKeyOrAdmin = hasKey | isAdmin;
% Your code here to create noAccess using ~ and display it

Need a hint?

Use ~ to invert a logical variable and disp to show the result.