Programming constructs

• Programming constructs

  1. Selection

  2. Sequence

  3. Iteration
• Sequence


  Executing one instruction after another
• Branching


  Program can end up going in a number of various directions depending on the outcome of a condition
• If statement


  First typical selection construct, allows program to execute different lines of code based on a condition
• Switch/Select Case statement


  Allows program to branch in more than one direction depending on the value of a variable
• Iteration/Looping


  Repeating sections of code
• For loop


  Counter controlled loop, used when the number of iterations is known ahead of time
• While loop


  Condition controlled loop, used when the number of iterations is not known ahead of time
• Do-until loop


  Condition controlled loop that executes the code at least once before checking the exit condition