Private Sub Command1_Click()
    Text3.Text = Val(Text1.Text) + Val(Text2.Text)
End Sub

1. What is This Visual Basic Code?

This is a simple Visual Basic code snippet that performs addition of two numbers entered in text boxes (Text1 and Text2) and displays the result in another text box (Text3) when a command button (Command1) is clicked.

2. How Does the Code Work?

The code works as follows:

Private Sub Command1_Click()
    Text3.Text = Val(Text1.Text) + Val(Text2.Text)
End Sub

Where:

• Text1.Text — Contains the first number input
• Text2.Text — Contains the second number input
• Val() — Function that converts text to numeric value
• Text3.Text — Displays the sum result

Explanation: The code executes when Command1 button is clicked, converts the text inputs to numbers, adds them, and displays the result.

3. Importance of Simple Calculators

Details: Simple calculator programs are fundamental learning tools in programming education, demonstrating basic input/output operations and arithmetic calculations.

4. Using the Calculator

Tips: Enter any two numbers in the input fields and click Calculate to see their sum. This demonstrates the functionality of the VB code above.

5. Frequently Asked Questions (FAQ)

Q1: What is the Val() function for?
A: The Val() function converts text strings to numeric values, ensuring proper arithmetic operations.

Q2: Can I modify this for other operations?
A: Yes, simply change the + operator to -, *, or / for subtraction, multiplication, or division.

Q3: How would I handle non-numeric inputs?
A: You could add error checking with IsNumeric() function before performing calculations.

Q4: What version of VB is this for?
A: This works in most VB versions including VB6, VBA, and VB.NET (with slight syntax differences).

Q5: How do I create the UI for this?
A: In the VB IDE, you would add two input TextBox controls, one output TextBox, and a CommandButton.