2.2 programming techniques

2.2 programming techniques

1. Sequence,Selection,Iteration

   • Sequence: Completing steps in the order which they must happen
   • Selection: Where a choice is made in a program depending on a condition or outcome
   • Iteration: Act of repeating or lopping specific sections of code

2. Data Types

   • Real /Float Number with decimal Point
   • Integer Number without a decimal Point
   • String A series of characters/TEXT
     • Boolean Yes no, true false value
   • Date/Time Date and Time in any format

3. Errors

   • Syntax Error An error in the rules/grammar of the language Eg missing colon / spelling mistake
   • Logic Error The program is written to do something other than what the programmer intended Eg Resetting only the first 9 elements in an array instead of all 10.
   • Run Time Error: More difficult to spot as it can run a program without reporting an error. E.g. runs but Doesn’t give an output. Or the program hangs or Becomes inactive