Y
In geometry it's called and ITERATION.
an iteration.
A while loop evaluates the conditional expression at the start of each iteration, whereas a do..while loop evaluates the conditional expression at the end of each iteration. Thus the do..while loop always executes at least one iteration.
true
A for loop typically runs a specific number of times in each iteration, as determined by the loop's initialization, condition, and increment/decrement statements.
A do-while loop checks its termination condition before each iteration, including the first; a do-until checks after each iteration, so that the first iteration occurs before the first check. The C language uses the word "while" for both types of loop, using the placement of the condition to control its timing:C do-while:while (condition) { /* condition checked before first loop iteration */... loop contents}C do-until:do {... loop contents} while (condition); /* condition not checked until after first loop iteration */
For
For
A non touching loop is where each iteration does not access data from a different iteration. An optimizing compiler/interpreter can detect this, and spread out the loop between different threads, potentially (with multiple processors) running the loop faster. An example of a non touching loop is the addition of two arrays. Each iteration accesses one element, and has no dependencies on elements accessed in different iterations. An example of a touching loop is the summation of elements in an array. Each iteration depends on the result of a different, usually the prior, iteration. Even there, however, the optimization process can spread the work out amongst different threads so long as there are synchronization mechanisms in place.
A do-while loop is a statement or series of statements that are executed at least once. At the end of each iteration, a conditional expression enclosed in a while() statement is evaluated to determine if the loop should start a new iteration or not.
true
True