FizzBuzz (the classic exercise)

This lesson covers solving FizzBuzz in VB.NET, with the aim of combining branching and looping.

FizzBuzz prints the numbers from 1 upwards, replacing multiples of 3 with "Fizz", multiples of 5 with "Buzz", and multiples of both (that is, of 15) with "FizzBuzz". It is the classic beginner's exercise.

The sample code loops from 1 to 15 and checks i Mod 15 = 0 first so that multiples of 15 take priority, then multiples of 3 and 5. The order of the checks decides the result.

A common early stumble is exactly that order. Test 3 and 5 first and a multiple of 15 prints just "Fizz", so the strictest condition has to come first.

FizzBuzz is never used directly in practice, but as an exercise it checks whether you can put branching and looping together correctly, which is why it is such a common measure of the fundamentals.

📖 Reference code

Module Program
    Sub Main()
        For i As Integer = 1 To 15
            If i Mod 15 = 0 Then
                Console.WriteLine("FizzBuzz")
            ElseIf i Mod 3 = 0 Then
                Console.WriteLine("Fizz")
            ElseIf i Mod 5 = 0 Then
                Console.WriteLine("Buzz")
            Else
                Console.WriteLine(i)
            End If
        Next
    End Sub
End Module

✍️ Your code

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