Looping Constructs used in C langeuage:-

    In any programming language loops are used to execute a set of statements repeatedly until a particular condition is satisfied. 
    
    The loop directs a program to perform a set of operations again and again until a specified condition is true. Looping statement is used when we want to execute statements until a condition is true.C contains following type of looping statement:-
* The for loop
* The while loop
* The do-while loop


  * For loop:-
           for loop is used to execute a set of statements for a given number of times , means if we want to execute statements till a certain number of time , for loop is used.
  Syntax:
                 for(start value; end value ; increment/decrement)
                   {
                          statement;
                      }

The for loop is commonly used when the number of iteration is known. So a for loop is a repetition control structure that allows you to efficiently write a loop that needs to execute a specific number of times.
   A for loop has two parts:- a header specifying the iteration. And a body which is executed once per iteration. The header often declares an explicit loop counter or loop variable, which allows the body to know which loops are typically used when the number of iteration is known before entering the loop. for loops can be thought of as shorthands for while-loops which increment and test a loop variable.



* While loop:-
              A while loop statement contains the condition first. If the control executes the statements of the while loop else, it ignores these statements.
   Syntax:
                while(condition)
                  {
                       Statement;
                    }

A while loop in C programming repeatedly executes a target statement as long as a given condition is true. When the condition becomes false,the line immediately following the loop.
    The while construct consists of a block of code and a condition.The condition is evaluated,and if the condition is true , the code within the block is executed.This repeats until the condition becomes false. Because the while loop checks the condition before the block is executed.



*Do-While loop:-
                    Do-while loop statement is another method used in C programming. Do - while loop ensures that the program is executed at least once and checks whether the condition at the end of the do-while loop is true or false.As long as the test condition is true,the statements will be repeated.

Syntax:
            do
               {
                     Statement;
                } while(condition);

 In most computer programming language, a do-while loop is control flow statement that executes a block of code at least once, and then repeatedly on a given boolean condition at the end of the block.
       The do -while construct consists of a process symbol and a condition.first,the code within the block is evaluated.If the condition is true the code within the block is executed again.This repeats until the condition becomes false.


One more loop which is not categorised is infinite loop.
    * Infinite loop:-
                      An infinite loop is sequence of instructions in a computer program which looks endlessly, either due to loop having no terminating condition , having one that can never be met or one that cause the loop to start over. Infinite loops are possible cause for a computer "freezing" other include thrashing,deadlock and access voidation. 


Therefore, loops are one of the most powerful concepts of computer programming facilitating the programmers or software developers to create such software modules or programs that are effective and efficient and to meet the requirement of the business needs.