Real world โ Pseudocode
Everyday situations are full of algorithms. Spot the INPUT, PROCESS, DECISION and OUTPUT โ then write the steps.
๐ Real world โ Pseudocode
A customer buys products. If the total exceeds โน5,000, give a 10% discount. Otherwise give no discount.
Input
The shopping TOTAL.
Process
Work out the discount, then the final amount.
Decision
Is TOTAL more than 5000?
Output
The FINAL_AMOUNT to pay.
Turn it into pseudocode
1BEGIN2 TAKE TOTAL3 IF TOTAL > 5000 THEN4 SET DISCOUNT = TOTAL * 0.105 ELSE6 SET DISCOUNT = 07 END IF8 SET FINAL_AMOUNT = TOTAL - DISCOUNT9 DISPLAY FINAL_AMOUNT10END๐ Real world โ Pseudocode
An ATM lets you withdraw money only if you have enough balance, and only in multiples of โน100.
Input
BALANCE and the AMOUNT requested.
Process
Subtract the amount from the balance.
Decision
Is AMOUNT a multiple of 100? Is BALANCE big enough?
Output
The cash + new balance, or a friendly error.
Turn it into pseudocode
1BEGIN2 TAKE BALANCE, AMOUNT3 IF AMOUNT MOD 100 != 0 THEN4 DISPLAY "Please use multiples of 100"5 ELSE IF AMOUNT > BALANCE THEN6 DISPLAY "Not enough balance"7 ELSE8 SET BALANCE = BALANCE - AMOUNT9 DISPLAY "Take your cash. New balance:", BALANCE10 END IF11END๐ Real world โ Pseudocode
A cinema gives a child ticket (โน150) to anyone under 12, a senior ticket (โน120) from 60 up, and an adult ticket (โน250) otherwise.
Input
The visitorโs AGE.
Process
Choose the right PRICE.
Decision
AGE = 60?
Output
The ticket PRICE.
Turn it into pseudocode
1BEGIN2 TAKE AGE3 IF AGE < 12 THEN4 SET PRICE = 1505 ELSE IF AGE >= 60 THEN6 SET PRICE = 1207 ELSE8 SET PRICE = 2509 END IF10 DISPLAY "Ticket price:", PRICE11END