2.2 programming

2.2 programming

1. variables

   • no spaces
   • no numbers at the start
   • examples
     • booleans
       • and, or, not, larger, smaller,equal not equal
     • strings
       • slicing, length, format
     • floats
     • integers

2. program flow: sequencing

   • allows a programmer to solve complex tasks through a number of simple steps
   • advantages: each line follows the next, creates simple programs fast, easy to follow for a small program, fundamental principle of a program.
   • disadvantages: not efficient, difficult to follow with large programs, hard to maintain.

3. flow: selection

   • allows a computer to 'think' (decide)
   • changes the flow of a program
   • validation, calculations and making sense of choices
   • good connection to Booleans and logic gates