Exam code: X816 75
Input validation is required to ensure that a program will only accept the numbers 1 or 5.
Using a design technique of your choice, design an efficient solution to ensure that the program will only accept valid numbers from the user.
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A program is being written that will allow gamers to add money to their account using gift cards.
The program asks the user to enter their username, their five‑character password and the gift card number. The updated balance in the user’s account is then displayed.
Using a programming language of your choice, write the input validation code to confirm that the password entered has five characters.
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A campsite booking system is being developed to calculate the cost of a stay at £35 per night, per person. The cost will be displayed to the user before they confirm the booking. The system will ask users for their name, number of people, arrival date and length of stay.
The number of guests who stayed at the campsite each night in 2023 is stored in the array guests.
| 0 | 1 | 2 | ..... | 364 |
| 271 | 240 | 153 | ..... | 87 |
The campsite want to know the total number of guests who stayed at the site in 2023.
Using a programming language of your choice, write the code to calculate this total.
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A window replacement company employs a programmer to write a program that calculates how much it will cost to fit triple glazed windows.
Small windows cost £299.99 and large windows cost £499.99 to replace.
The algorithm to calculate the cost is shown below.
Set totalCost to 0
Ask for number of rooms
Loop through the number of rooms
Ask for the number of small windows
Ask for the number of large windows
Calculate and update totalCost
End loop
Display totalCost
Step 6 in the algorithm calculates and updates the total cost.
Using a programming language of your choice, write the code for step 6.
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