Fixed Loop

A fixed loop will repeat for a set amount of time and allows the code to carry out repetitive lines of code.  The number of times a selection of code has to be repeated is normally specified by the programmer.

The For Loop has a loop counter. This counter is an integer and its value will increase by 1 every time a loop has completed.

The code within a loop is indented so show where the  loop will begin and end within the program.

Structure Diagram – Loop Example

Conditional Loop

A While Loop (conditional loop) will repeat a selection of code while a condition is false.  If that condition is not met, then the selection will repeat until the condition is true.

Structure Diagram – Conditional Loop Example