Programming

Programming

1. Variables

   • A Variable is a piece of data which can be changed, there are data types that contain certain types of data.
   • Data Types
     • String
       • An ordered array of alpha-numeric text
     • Integer
       • – A number without decimals
     • Character
       • A single piece of alpha-numeric text
     • Boolean
       • A data type with only two possible values
     • Real (Decimal)
       • A number with decimals

2. Scoping

   • A variables scope refers to where the variable can be accessed and modified.
   • Scopes
     • Local Scope
       • When a variable can be read and modified only within the procedure in which it is declared.
     • Module Scope
       • Procedures that are in the same module can be read and modify that variable when it’s declared
     • Project Scope
       • If a variable is in project scope the variable can be read and modified within the same program and project.

3. Selection

   • An IF statement is a conditional statement and is a type of selection, it will only run parts of the program if the Boolean is True.
   • Operators
     • ==
       • Checks if the values for the operands are equal or not;