VBA Developer Interview Questions and Answers

Explaining the difference between procurer and function, and the purpose of Option Explicit in VBA development.

• Procurer does not return a value to the user, while Function does.

• Option Explicit is used to declare variables at the module level, making it mandatory.

• Project explanation refers to the description of what was done in a particular project.

Loops are used to execute a set of statements repeatedly until a condition is met.

• For loop: executes a set of statements for a specified number of times

• While loop: executes a set of statements as long as the condition is true

• Do-While loop: executes a set of statements at least once, and then repeatedly executes the set of statements as long as the condition is true

• For Each loop: used to loop through each element in an array or collection

Turn on one switch, wait for a while, then turn it off and turn on another switch. The switch left on is the one connected to the bulb.

• Turn on switch 1 and leave it on for a few minutes

• Turn off switch 1 and turn on switch 2

• Go to the room with the bulb, the switch left on is the one connected to the bulb

String reverse is possible in VBA macros because VBA provides built-in functions and methods to manipulate strings.

• VBA macros have access to the VBA string manipulation functions like Mid, Left, Right, and Len.

• VBA macros can use loops and conditional statements to reverse a string character by character.

• VBA macros can also utilize the Split function to split a string into an array of characters and then reverse the array.

• VBA macros can easily convert a string into an array of...read more

Libraries such as scikit-learn, TensorFlow, and Keras are commonly used for predictive model building.

• scikit-learn

• TensorFlow

• Keras

A custom function in VBA is a user-defined function that performs a specific task or calculation.

• Custom functions are created by the user to extend the functionality of Excel or other Office applications.

• They can be used to perform complex calculations, manipulate data, or automate tasks.

• Custom functions are written in VBA code and can be called from within Excel formulas.

• For example, a custom function could be created to calculate the average of a range of cells or to format...read more

Userform is a graphical interface for users to interact with data, while modules are containers for VBA code.

• Userform allows for creating custom forms with input fields, buttons, etc.

• Modules are used to store VBA code that can be called from other parts of the program.

• Userform can be used to collect user input and display information in a visually appealing way.

• Modules can contain functions, subroutines, and variables that can be accessed throughout the VBA project.

The SUM formula adds up a range of numbers, while the COUNT formula counts the number of cells that contain numbers.

• Use SUM formula to add up a range of numbers, like =SUM(A1:A10)

• Use COUNT formula to count the number of cells that contain numbers, like =COUNT(A1:A10)

• You can also combine these formulas, like =SUM(A1:A10) + COUNT(B1:B10)