Syntax of while loop in C programming language is as follows: Here the C statements can be executed once even if condition is not satisfied. while loop in c language i.e syntax, flow chart and simple example program While loop in C starts with the condition, if the condition is True, then statements inside the while loop will be executed. The "While" Loop . while (condition) { statements; } If the statements are executed while the condition has the value “true” (1).The first important thing about this while loop is that has a conditional expression (something like (a > b) etc… The specified condition determines whether to execute the loop body or not. 'C' programming language provides us with three types of loop constructs: 1. This is the basic difference between while loop and do while loop. do while loop in C programming Using do while loop we will execute the statement first and then check the condition. Example program to demonstrate while loop. Read more about C While Loop. while loop in C programming Using while loop we will check the condition first and then execute the statement. The only difference is that in do-while loop, the test condition is evaluated at the end of loop. Here the C statements can be executed only if condition is True or satisfied. While loop is very useful, when the number of times the statements in the loop has to be executed is not known in advance. Now, while loop execution started. the number of times the loop body is needed to be executed is known to us.The while loop in C/C++ is used in situations where we do not know the exact number of iterations of loop … In this tutorial, we will learn the syntax of while loop, its execution flow using flow diagram, and its usage using example programs. The variable n initialized with value 1, and then printf statement executed and displayed the message “While loop in C programming” to the screen. 3. 4.1. Condition is a boolean expression which evaluates to either true or false. The general form of for statement is as under: The for loop While Loop in C. A while loop is the most straightforward looping structure. The Loop Control Structure in C programming. The do-while loop . 2. Program using the while loop The while loop in C Programming is to repeat a block of statements for a given number of times until the given condition is False. They are: Using a for Loop; Using a while Loop; Using a do-while Loop; C for Loop. Loops in C/C++ come into use when we need to repeatedly execute a block of statements.. During the study of ‘for’ loop in C or C++, we have seen that the number of iterations is known beforehand, i.e. Write a program in C to multiply two numbers without actually using the * operator but have to use both the while and do-while loops. The simplest of three loops in C Language is the C while loop.In common language while has fairly obvious meaning: the while-loop has a condition:. The do-while loop is similar to while loop. These are three methods by way of which we can repeat a part of a program. For example, if we want to ask a user for a number between 1 and 10, we don't know how many times the user may enter a larger number, so we keep asking "while the number is not between 1 and 10". Let us write a C program to print natural numbers from 1 to 10 using while loop. C While Loop. While loop in C programming Loop executed 1 time Loop executed 2 time Loop executed 3 time Loop executed 4 time Control came out from while loop. A "While" Loop is used to repeat a specific block of code an unknown number of times, until a condition is met. C While loop statement lets programmers to execute a block of statements repeatedly in a loop based on a condition. The while loop . 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