Why operators drive computation in MATLAB - See It in Action

Why operators drive computation

📖 Scenario: Imagine you are a cashier at a store. You need to calculate the total price of items a customer buys. Operators like +, -, *, and / help you do these calculations quickly and correctly.

🎯 Goal: You will create a simple MATLAB program that uses operators to calculate the total cost of items bought, apply a discount, and find the final amount to pay.

📋 What You'll Learn

Create variables with exact values for item prices and quantities

Create a variable for discount rate

Use operators to calculate total cost and apply discount

Print the final amount to pay

💡 Why This Matters

🌍 Real World

Cashiers and sales software use operators to calculate prices, discounts, and totals quickly and accurately.

💼 Career

Understanding operators is essential for programming tasks in retail, finance, and many other fields where calculations are needed.

1

Create item prices and quantities

Create variables called price1, price2, qty1, and qty2 with these exact values: price1 = 10, price2 = 15, qty1 = 3, qty2 = 2.

MATLAB

% Your code here

Need a hint?

Use the assignment operator = to set each variable to the given number.

2

Set the discount rate

Create a variable called discount and set it to 0.1 to represent a 10% discount.

MATLAB

price1 = 10;
price2 = 15;
qty1 = 3;
qty2 = 2;
% Your code here

Need a hint?

Remember to use the assignment operator = to set discount.

3

Calculate total cost and apply discount

Create a variable called total_cost that calculates the total price of all items using multiplication and addition operators. Then create a variable called final_amount that applies the discount using subtraction and multiplication operators.

MATLAB

price1 = 10;
price2 = 15;
qty1 = 3;
qty2 = 2;
discount = 0.1;
% Your code here

Need a hint?

Use * to multiply price and quantity, + to add totals, and - to subtract the discount.

4

Display the final amount

Use disp to print the text 'Final amount to pay:' followed by the value of final_amount.

MATLAB

price1 = 10;
price2 = 15;
qty1 = 3;
qty2 = 2;
discount = 0.1;
total_cost = price1 * qty1 + price2 * qty2;
final_amount = total_cost - total_cost * discount;
% Your code here

Need a hint?

Use two disp statements: one for the text and one for the number.