This document discusses different types of loops in computer programming including for, while, and do-while loops. It provides definitions and descriptions of each loop type, their syntax, and how they work. Nested loops are also covered, which are loops used inside other loops. Key details covered include how for loops iterate with a loop variable, while loops test conditions before executing, and do-while loops check conditions at the bottom of the loop so they always execute at least once.

1. LOOPING

2. Table Of Content
Types of
loop
Looping
definition
For loop
While
loop
Do while
loop

3. In computer programming, a loop is a sequence of
instructions that is continually repeated until a
certain condition is reached
Programming language provide various control
structures that allow for more complicated
execution paths
Loop control statement change execution from its
normal sequence. When execution leaves a scope,
all automatic objects that were created in that
scope are destroyed.
A Loop statement allows us to execute a
statement or group of statements multiple times .

4. Loop type Description
While loop Repeats a statement or group of
statements while a given condition is
true. It tests the condition before
executing the loop body.
For loop Execute a sequence of statements
multiple times and abbreviates the
code that manages the loop variable.
Do-while loop Like a while statement, except that it
tests the condition at the end of the
loop body
Nested loop You can use one or more loop inside any
another while, for or do while loop

5. The syntax of a for loop in C programming language is :
In computer science a for loop is a programming language
statement which allows code to be repeatedly executed

8. SYNTAX
The syntax of a while loop in C programming language :
Here, statement(s) may be a single statement or a
block of statements. The condition may be any
expression, and true is any nonzero value. The loop
iterates while the condition is true.
When the condition becomes false, the program
control passes to the line immediately following the
loop.
A while loop statement in C programming language
repeatedly executes a target statement as long as a
given condition is true.

11. Unlike for and while loops, which test the loop condition at the top of the loop, the do...while loop
in C programming checks its condition at the bottom of the loop.
A do...while loop is similar to a while loop, except the fact that it is guaranteed to execute at least
one time.
The syntax of a do...while loop in C programming language is −

14. C programming allows to use one loop inside another loop. The following section shows
a few examples to illustrate the concept.