The problem presents a Pascal program that takes five subject marks as input, calculates their total, and displays the total. It then asks several questions regarding the program, including the number of elements in the array, the array's data type, the array's name, the array's contents given sample input, and the overall output of the program. Finally, a pseudocode segment is given that calculates values and places them into an array. We must then fill in the contents of an array according to the given pseudocode.

1. Problem Description

The problem presents a Pascal program that takes five subject marks as input, calculates their total, and displays the total. It then asks several questions regarding the program, including the number of elements in the array, the array's data type, the array's name, the array's contents given sample input, and the overall output of the program. Finally, a pseudocode segment is given that calculates values and places them into an array. We must then fill in the contents of an array according to the given pseudocode.

2. Solution Steps

(a) Questions regarding the Pascal program:

(i) Number of elements in the array: The array is declared as `marks: array [0..4] of integer`. This means the array has indices from 0 to 4, inclusive. Therefore, the number of elements is $4 - 0 + 1 = 5$.

(ii) Data type of the array: The array is declared as `marks: array [0..4] of integer`. Hence, the data type of the array is integer.

(iii) Name of the array: The array is declared as `marks: array [0..4] of integer`. Thus, the name of the array is `marks`.

(iv) Array display when entering marks 60, 90, 82, 45, and 92 respectively:

The program iterates from $i = 4$ down to

0. This means the inputs are stored in reverse order. The input values are 60, 90, 82, 45, 92 in the order the program prompts for them. Since the loop counts down from 4 to 0 the array `marks` will have its values placed in the opposite order of the inputs.

Therefore:

marks[4] = 60

marks[3] = 90

marks[2] = 82

marks[1] = 45

marks[0] = 92

(vi) Output of the program: The program calculates the total of the marks and displays it.

The total is calculated as:

$tot = marks[4] + marks[3] + marks[2] + marks[1] + marks[0]$

$tot = 60 + 90 + 82 + 45 + 92 = 369$

The program outputs "total is 369".

(b) Questions regarding the pseudocode:

The pseudocode assigns values to an array named `Marks`. The values are calculated as the square of the index `x`. The loop iterates from x = 0 to

9.

For x = 0: Marks[0] = 0 * 0 = 0

For x = 1: Marks[1] = 1 * 1 = 1

For x = 2: Marks[2] = 2 * 2 = 4

For x = 3: Marks[3] = 3 * 3 = 9

For x = 4: Marks[4] = 4 * 4 = 16

For x = 5: Marks[5] = 5 * 5 = 25

For x = 6: Marks[6] = 6 * 6 = 36

For x = 7: Marks[7] = 7 * 7 = 49

For x = 8: Marks[8] = 8 * 8 = 64

For x = 9: Marks[9] = 9 * 9 = 81

3. Final Answer

(a)

(i) 5

(ii) integer

(iii) marks

(iv)

[0]: 92

[1]: 45

[2]: 82

[3]: 90

[4]: 60

(vi) total is 369

(b)

[0]: 0

[1]: 1

[2]: 4

[3]: 9

[4]: 16

[5]: 25

[6]: 36

[7]: 49

[8]: 64

[9]: 81