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LOOPING, image - Coggle Diagram

- - - - LOOPING DIVISION
        
        for
        
        Suitable if we know the number of iterations
        
        expr1 is executed only once before looping.
        
        expr2 is a Boolean expression. If not given, it is assumed to be true.
        
        If expr2 is false, the loop is terminated.
        
        After execution of the repeat section, expr3 is executed.
        
        The for loop is often distinguished by an explicit loop counter or loop variable.
        
        This allows the body of the for loop (the code that is being repeatedly executed) to know about the sequencing of each iteration.
        
        for loops are also typically used when the number of iterations is known before entering the loop.
        
        1 .while
        
        A "While" Loop is used to repeat a specific block of code an unknown number of times, until a condition is met.
        
        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".
        
        If we (or the computer) knows exactly how many times to execute a section of code (such as shuffling a deck of cards) we use a for loop.
        
        The while construct consist 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 while loops check the condition before the block is executed,the control structure is often also known as a pre-test loop.
        
        For example, say we want to know how many times a given number can be divided by 2 before it is less than or equal to 1. If we know a specific number, such as 32, we can say 5 times, but for a given symbolic variable "NUMBER" which represents any number in the world, how many times is not known a priori (before hand).
        
        Example while in c++
        
        do-while
        
        The do/while loop is a variant of the while loop. This loop will execute the code block once, before checking if the condition is true, then it will repeat the loop as long as the condition is true.
        Its syntax is:
        
        Here ,
        
         The body of the loop is executed at first. Then the condition is evaluated.
        
         If the condition evaluates to true, the body of the loop inside the do statement is executed again.
        
         The condition is evaluated once again.
        
         If the condition evaluates to true, the body of the loop inside the do statement is executed again.
        
         This process continues until the condition evaluates to false.Then the loop stops.