Arrays
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The document explains what arrays are and how they work in VB. It states that arrays allow you to store multiple values in a single variable by using compartments indexed from 0. It demonstrates declaring and populating a string array with names, then accessing each element by index and printing it to the console using a While loop to iterate through the array.
Arrays
- 1. ARRAYS A WHOLE HEAP OF BUCKETS
- 2. One Variable Can Only Hold One Thing Im holding the name DAVE Name
- 3. One Variable Can Only Hold One Thing DONT TRY Im holding AND PUT the name ANOTHER DAVE NAME IN Name ME!
- 4. An Array is Different kind of Variable Im holding Im holding Im holding the name the name the name DAVE ADAM CLEM 0 1 2 Name
- 5. An Array is Different kind of Variable An array is a set of values that are logically related to each other, such as the number of students in each grade in a grammar school. 0 1 2 Name
- 6. An Array is Different kind of Variable An array is like many buckets stuck together 0 1 2 Name
- 7. An Array is Different kind of Variable An Array has many compartments to hold data The array below has 3 compartments. It can hold 3 pieces of data 0 1 2 Name
- 8. An Array is Different Each compartment is labelled The labelling starts from 0 Index 0 Index 1 Index 2 0 1 2 Name
- 9. An Array is Different You can access different parts of the array by referencing the correct index number Index 0 Index 1 Index 2 0 1 2 Name
- 10. Arrays In VB Declaring the Declaring the Declaring the data type of the Array size of the Array Array, in this case a String Dim names(3) As String names(0) = "DAVE" Declaring the contents of the names(1) = "ADAM" Array names(2) = "CLEM"
- 11. Arrays In VB Dim names(3) As String names(0) = "DAVE" names(1) = "ADAM" names(2) = "CLEM" Console.WriteLine(names(0)) Console.WriteLine(names(1)) Console.WriteLine(names(2)) Writing the contents of the Console.ReadLine() array to the console.
- 12. Arrays In VB Dim names(3) As String names(0) = "DAVE" names(1) = "ADAM" names(2) = "CLEM" Console.WriteLine(names(0)) Console.WriteLine(names(1)) Console.WriteLine(names(2)) Console.ReadLine() Erasing the contents of the Erase names Array
- 13. Arrays and WHILE Module Module1 The while loop will Sub Main() look at every Dim names(3) As String compartment of names(0) = "DAVE" the names array names(1) = "ADAM" names(2) = "CLEM" Dim i As Integer = 0 While i < names.Length - 1 Console.WriteLine(names(i)) i = i + 1 End While Console.ReadLine() End Sub
- 14. Arrays and WHILE Module Module1 Sub Main() Dim names(3) As String names(0) = "DAVE" names(1) = "ADAM" names(2) = "CLEM" Dim i As Integer = 0 While i < names.Length Console.WriteLine(names(i)) i = i + 1 End While Console.ReadLine() End Sub