Programming

• Variable

  A value that can change, depending on conditions or on information passed to the program.
• Constant

  A value that cannot be altered by the program during normal execution, i.e., the value is constant.
• Operator


  A generic term in Computer Science. An operator tells how you to manipulate or interpret values. Categories of operators you will need to know are: Arithmetic, Boolean, Comparison.
• Assignment

  Giving a variable or constant a value. e.g. counter = 0
• Programming constructs

  • Sequence
  • Selection
  • Iteration
• Sequence


  One of the 3 basic programming constructs. Instructions happening one after the other in order is sequence.
• Selection


  One of the 3 basic programming constructs. Instructions which can evaluate a Boolean expression and then branch the code to one or more alternatives paths is branching / selection.
• Count controlled iteration

  An iteration which loops a fixed number of times. The count is kept in a variable called an index or counter. When the index reaches a certain value (the loop bound) the loop will end. Count-controlled repetition is often called definite repetition because the number of repetitions is known before the loop begins executing.
• Condition controlled iteration


  A way for computer programs to repeat one or more various steps depending on conditions set either by the programmer initially or real-time by the actual program.