Do While Loop
A do while loop is a control flow statement in programming that executes a block of code at least once, and then repeats the execution as long as a specified condition remains true. It differs from a standard while loop by checking the condition after the loop body, ensuring the code runs at least one iteration regardless of the initial condition. This construct is commonly used in languages like C, C++, Java, and JavaScript for tasks requiring guaranteed initial execution.
Developers should use a do while loop when they need to ensure that a block of code executes at least once before evaluating a condition, such as in user input validation where you prompt for input and then check its validity. It is also useful in scenarios like menu-driven programs or processing data where an initial operation must occur before condition testing, providing more predictable behavior compared to while loops in these cases.