Question

A shopping mall is on sales promotion and the discount is calculated as followed:

        Price<200, no discount;

        200≤Price<500, 3% off;

        500≤Price<1000, 5% off;

        1000≤Price<2500, 8% off;

        2500≤Price, 10% off.

i. Define a function to calculate the discount when the price is given.

ii. Plot the price-discount curve when price≤5000.

(hint: you can use if…else…，or switch…case…)

(Using MATHLAB/SciLab Programme)

Answer 1

Main script

clc;close all;clear all;

%i

price=5000;

d=saledisc(price);

fprintf('The discount amount for Rs %5.2f is %5.2f\n',price,d)

% ii)

price=[200:1:5000];

d=saledisc(price);

figure;plot(price,d);grid;xlabel('Price');ylabel('Discount');title('Price vs discount plot')

Output:

The discount amount for Rs 5000.00 is 500.00

Function script:

function discount=saledisc(price)

k=0;

for price=price

k=k+1;

if price<200

discount(k)=0;

elseif price>=200 && price<500

discount(k)=price*3/100;

elseif price>=500 && price<1000

discount(k)=price*5/100;

elseif price>=1000 && price<2500

discount(k)=price*8/100;

else

discount(k)=price*10/100;

end

end

end