2.1 algorithms

2.1 algorithms

1. algorithms use control flow to make a decision about which order to do process'

   • they can repeat actions or start ne actions based on new informations

2. algorithms cane be designed by pseudocode or a flow chart.

3. Pseudocode.

   • have specific syntax that must be used for a program to run properly.
   • not a language, its a simple way of describing a set of instructions.
   • INPUT- indicates a user will be inputting something
   • OUTPUT- indictaes that an output will appear on the screen.
   • FOR- a counting loop (iteration)
   • WHILE- a loop. (iteration that has a coindition at the beggining)
   • REPEAT-UNTIL-a loop (iteration) that has a condition at the end.
   • IF-THEN-ELSE a decision (selection)in which a choice is made.

4. pseudocode can be used to plan out programs.

5. Flow chart.

   • a flow chart is a diagram that represents a set of instructions.

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