Question

B. Manually analyze and debug the following logic and programming code. Write in the result column, the value of the result variable when the variables i and j have the values ​​indicated in each row of the table (6 pts.). In the event that the result cannot be calculated, state it and the reason.

Option Explicit

Sub Calc ()

Dim i As Integer, j As Integer, n As Integer
Dim result As Integer

i = 0
j = 0
n = 4
result = 0

For i = 1 to n
For j = 1 to n
result = result + (2 * i * j)
Next j
Next i

End Sub

i	j	result
1	1
2	3
3	5

Answer 1

The correct result is given in the below screenshot:

Explanation:

The initial value of the result is 0.

For i = 1 and j = 1, the value of result will be = 0 + (2 * 1 * 1)

= 0 + 2

= 2

So, the result in first row will be 2.

For i = 2 and j = 3, the value of result will be = result + (2 * 2 * 3)

The value of the result will be calculated starting from the first iteration as given below:

In the first iteration, the value of the result will be = 2
In the second iteration, the value of the result will be = 6
In the third iteration, the value of the result will be = 12
In the fourth iteration, the value of the result will be = 20
In the fifth iteration, the value of the result will be = 24
In the sixth iteration, the value of the result will be = 32
In the seventh iteration, the value of the result will be = 44

For i = 2 and j = 3, the value of result will be = 32 + (2 * 2 * 3)

= 32 + 12

= 44

So, the result in the second row will be 44.

For i = 3 and j = 5, the value of the result can't be calculated because the value of j is greater than n.

The value of j will be 1, 2, 3, and 4 only.

So, the result can't be calculated for i=3 and j=5.