Why control flow directs program logic in MATLAB - See It in Action

Why control flow directs program logic

📖 Scenario: Imagine you are creating a simple program that decides what message to show based on the temperature outside. This is like deciding what to wear depending on the weather.

🎯 Goal: You will build a MATLAB script that uses control flow to check the temperature and print a message telling if it's cold, warm, or hot.

📋 What You'll Learn

Create a variable to store the temperature

Create a threshold variable for cold temperature

Use an if-elseif-else structure to decide the message

Print the correct message based on the temperature

💡 Why This Matters

🌍 Real World

Control flow helps programs make decisions like a traffic light deciding when to stop or go.

💼 Career

Understanding control flow is essential for writing programs that react to different situations, a key skill for any programmer.

1

Create the temperature variable

Create a variable called temperature and set it to 15.

MATLAB

% Your code here

Need a hint?

Use the equals sign = to assign the value 15 to temperature.

2

Create the cold temperature threshold

Create a variable called cold_threshold and set it to 10.

MATLAB

temperature = 15;
% Your code here

Need a hint?

This variable will help us decide if it is cold outside.

3

Use if-elseif-else to decide the message

Write an if statement that checks if temperature is less than cold_threshold. If true, set message to 'It is cold'. Use elseif to check if temperature is less than 25 and set message to 'It is warm'. Otherwise, set message to 'It is hot'.

MATLAB

temperature = 15;
cold_threshold = 10;
% Your code here

Need a hint?

Use if, elseif, and else to check conditions in order.

4

Print the message

Use disp(message) to display the message on the screen.

MATLAB

temperature = 15;
cold_threshold = 10;
if temperature < cold_threshold
    message = 'It is cold';
elseif temperature < 25
    message = 'It is warm';
else
    message = 'It is hot';
end
% Your code here

Need a hint?

Use disp to show the message stored in the variable message.