The tradition developed, in C, of using post-increment when the expression value is not used, especially in for loops. The syntax of a for loop in C programming language is −. The second for loop uses the “pre-increment” operator where the operand is prefixed with the operator as “++i”. Difference Between Pre-Increment and Post-Increment in C#. In LINE B, where we have postfix increment operator i.e. So that you can understand if statement, for loop, while loop and do-while loop syntax easily. I would avoid pre-increment and post-increment operators in a while-loop condition as much as possible. If there is a difference, then is it in the outcome/correctness or is it in the performance of both the loops ? Try to learn the idea of the JavaScript prefix and postfix so that you can understand if, for loop, while loop and do-while loop syntax’s easy. Syntax of for loop: for (initialization; condition test; increment or decrement) { //Statements to be executed repeatedly } Flow Diagram of For loop It's not as idiomatic as it is with the for-loop so most people will have to pause and read it carefully to make sure they understand exactly when the while-loop terminates and what the value of the variable will be after the loop. A loop is used for executing a block of statements repeatedly until a given condition returns false. Since the two types of increment behave the same when the value is ignored, why not just always pre-increment? NOTE: Decrement and Increment operators in JS programming used in For Loop, While loop, and Do While loops. But have you ever wondered, what happens, if you try to increment the value of the iterator from inside the for loop. This is one of the most frequently used loop in C programming. For loops, in general, are used for sequential traversal. In this lesson we discuss about for loops in C. We understand about initialization, test condition and increment decrements. Some find post-increment easier to read, since the "subject" (i) precedes the "verb" (++), just like in English. In LINE A, we have prefix increment operator i.e. Yes, you guessed it right! Note that both the loops execute with variable i initialized as 0, and both the loops produce the same output despite using different increment strategy for each of them.I used pre-increment for the first loop and post-increment for the second loop, but still the output remained the same for both.How? ++ before the operand b i.e. Try to understand the concept of the Java prefix and postfix. I never saw a tutorial or some lecture, which showed a classic for-loop witout the post-increment-order. Here, we have not given any example because it was too early to understand the loops concept. Pre and Post Increment - Java Example Programs . NOTE: Though increment and decrement operators mostly used in For Loop, While and Do-While loops. 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.. Syntax. There is no difference whether you use prefix or postfix form; the variable value will increase by 1. Then you must be wondering why there are two ways to do the same thing. for (int i=0; i