INFS308

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INFS308

• Spring 2006

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User Types

• Programmers can create their own variable types
• One such variable type is a structure
• How does one reference a portion of the structure?

Type emprecord dim name as string dim id as
integer dim rate as single End type Dim newemp
as emprecord
Name ID Rate
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Arrays of Structures

• Why create user types (structures)?
• Remember that each element must be of the same
  type (e.g. integer, string, etc.)
• So, how do your store both the name and id number
  of 20 employees in an array?
• Use the Data structure

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Arrays of structures
Name id
Type emp dim name as string dim id as
integer End Type Dim emp_array (5) as emp Dim
ind_emp as integer
Bob 24 James
14 Becky 35 Bobbie
45 Zachery 50 Aaron 73
0 1 2 3 4 5
How do you refer to Bobs name? Where is Bobbies
id? What value is in emp_array(4).id Write the
code to go through the array and find Zacherys
id!
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In Class Exercise

• Create a record structure, Food_price, and a
  single dimensional array, food_array. Now create
  the user interface to accept text input from the
  user, txtFoodIn, and find and display the price
  of that food item.
• Structure Food_price
• Public fooditem as String
• Public foodprice as decimal
• End Structure