Iterative Structures

Comp Prog

Iteration Structure

It is also known as loop or repetition.

Loop

Is used in programming to repeat a
specific block until some end condition is met.

While loop
Do... While loop
For loop

There are three loops in C programming:

While

A pretest loop begins with the keyword ...

Test Expression

It is enclosed in parenthesis.

Once

The body in posttest loop would be executed .... no matter what.

Accumulating

is quite common in loops especially in finding out total value for a range of values entered.

Counting

It keeps track of number of times certain operations or instruction executed.

Counter Variable

It is is normally declared to count by adding 1 each time the operation is performed.

Counter-controlled loop

It allows some operations to be executed for a fix number of times continuously
without any interruption.

Initialization
Test/condition
Body
Update expression
The end part.

In a counter-controlled loop there are five essential elements:

For loop

It is commonly used when the number of iterations is known.

Code Block

Inside the braces is executed once.