Sequence Control Structure 

In the mid-1960’s, mathematicians proved that any program, no matter how complicated, can be written using only 3 basic control structures.

· Sequence

· Selection

· Iteration also called repetition

Control structures are used to control which instruction will be executed next.

So far we have only used the sequence structure.

The sequence control structure is the default or overriding structure.

The sequence structure indicates instructions are to be executed one statement at a time in the order they occur from top to bottom unless a different control structure dictates otherwise.