2.2 Programming (Added) v2

2.2 Programming (Added) v2

1. Variables

   • computer programs accept nputs from a user, process them using some constants
     • its a good idea to lable various inputs constants and outputs
   • without inputs our programs are not useful
     • cannot interact with the outside world and produce the same result.
   • Keywords:
     • Output
     • Variable
     • Input
     • Constant

2. Operators

   • operators represent the operations that are performed on the data
   • operators in maths =
     • +
     • -
     • /
     • *
   • Pseudocode for string operations
     • convert string to upper
       • my String.Upper
     • convert string to lower
       • my String.Lower
   • Keywords:
     • Boolean
     • SPLIT
     • Arithmetic
     • String
     • Substring

3. Selection

   • Why use selection ?
     • The use of selection allows the computer to think
     • Selection changes the flow of a program
   • Keywords:
     • IF
     • ElSEIF
     • ELSE
     • Selection
     • Condition

4. Sequencing

   • Sequencing allows a programmer to solve complex tasks through a number of simple tasks
   • the order the tasks are done matters
     • like in math you use Brackets to make sure certain operations are done before others.
   • Keywords
     • Sequence/Algorithm
     • Instructions
     • Efficiency
     • Structured

5. Pseudocode