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Do the following: Open the incomplete program in the Question 1 folder - NSC Information Technology - Question 1 - 2021 - Paper 1
Question 1
Do the following: Open the incomplete program in the Question 1 folder. Enter your examination number as a comment in the first line of the Question1_U.pas file. Co... show full transcript
Worked Solution & Example Answer:Do the following: Open the incomplete program in the Question 1 folder - NSC Information Technology - Question 1 - 2021 - Paper 1
Step 1
Button [1.1 - Calculate thickness of slices]
Answer
In order to calculate the thickness of the slices,
- Declare Variables: Define an integer variable for the number of slices and a real variable for the thickness of the slices.
- Load Image: Use code to stretch the image correctly with
imgQ1_1.Stretch := True;. - Get Input: Retrieve the number of slices from the spin edit component
spnQ1_1, usingnumberOfSlices := spnQ1_1.Value;. - Calculate Thickness: Compute the thickness of each slice using the formula: ext{Thickness of slice} = rac{242}{ ext{number of slices}}
- Display Output: Format and display the calculated thickness in millimeters with two decimal places in
lblQ1_1.Caption := FormatFloat('0.00', thicknessOfSlice);.
Step 2
Button [1.2 - Calculate change]
Answer
To calculate the change from a given amount:
- Define Constant: Set a constant for the bread price (e.g.,
const BREAD_PRICE = 12.90;). - Get Amount Offered: Retrieve the amount entered by the user from the edit box.
- Calculate Change: If the offered amount is greater than or equal to the bread price, compute the change:
- Display Result: Show the change on the panel, formatted as currency. If insufficient, display a message indicating insufficient amount offered.
Step 3
Button [1.3 - Multiples of 10]
Answer
To check for multiples of 10:
- Initialize Counter: Set a counter for multiples of 10 to zero.
- Loop: Execute a loop 10 times:
- Generate a random number between 50 and 100.
- Display the random value.
- Check if the random value is a multiple of 10 by using: ext{if randomValue} mod 10 = 0
- If true, increment the counter.
- Output Result: After the loop, display the counter's value along with a message.
Step 4
Button [1.4 - Hidden security code]
Answer
To compile the hidden security code from the paragraph:
- Loop Through Paragraph: Loop through each character of
sParagraphto find characters preceding 't'. - Check Conditions: For each character:
- If the character before 't' is not a space, append it to
sSecurityCode.
- If the character before 't' is not a space, append it to
- Ensure Length: Ensure that
sSecurityCodedoes not exceed 8 characters. - Position Management: Maintain the position to find the next 't' character, using similar logic to track the characters.
- Display Security Code: Finally, display the constructed security code in upper case in
edt1_4.