#While loop in r code

On the contrary, while loop is appropriate when the exact number of iterations is not known, meaning you do not know how many times the loop has to be repeated. However, the for loop is preferable when you know exactly the number of times the loop has to be repeated. The for loop is quite similar to the while loop in terms of memory consumption and speed.

#While loop in r code

вЂ“ While both for and while are entry-control loops used to execute block(s) of code repeatedly certain number of times, they differ in functionality. Difference between For and While Loop Basics It is appropriate as you do not know exactly how many times the user wants to repeat the loop. As soon as the condition becomes false, it stops the execution of the loop and passes the control to the statement immediately following the while loop. It is the most basic loop in programming with only one control condition which executes as long as the condition is met. It executes a target statement repeatedly as long as the given condition is true. It is the simplest loop control statement used in C programming to execute indefinite loops. This means the loop will continue to execute infinite number of times until and unless the condition is satisfied. Unlike for loop, while loop is used for indefinite loops where the number of iterations is not known. The for statement uses a loop control variable, providing you with three actions automatically in one compact statement: Initialization, Evaluation and Incrementation. It seems appropriate when the initialization and increment are logically related and are single statements. For loops are used only to make the code slightly shorter, but also make it easier for other C programmers to read. Definite loops are those that will loop a specific number of times. The for loop is used for definite loops when the number of iterations are known. We look at the two entry-controlled loops in detail to understand the difference between the two.ДЄ for loop is an entry control statement used for the repeated execution of certain statements along with the repeated testing for a definite value of expression to be either true or false. For and While are the general loop control statements used in C programming, along with Do-While loop. Most of the times, we know the number of times the loop has to be repeated, while sometimes, itвЂ™s unknown and the loop is repeated until the condition is true. This involves repeating a group of instructions of a program either a specified number of times or until some logical condition is satisfied. When using a loop within a program, you can write one set of instructions that operates on multiple data sets. Loops come in extremely handy in situations such as iterating through data structures or traversing through large data sets in order to filter out junk data. In programming, we often have to execute the statements more than once, in which case a loop can be used. Almost every programming language has a concept called loop, which helps in running a single block of code a number of times. If youвЂ™re into programming, then you already know about loops. Before we jump into the difference between for and while loop, we must understand the concept of looping first.