The difference is that the dowhile statement must execute at least once regardless of whether the condition to enter the loop was false. Open-loop control systems are basically a one-way street that tells its final value based on a setpoint input and. What Is An Open Loop System Examples Advantages Disadvantages First they use a setpoint input to define what the final value should be and second there is no feedback in the control circuitry that allows the system to self-adjust. . Program to calculate the volume in which let us consider the task of building an application that calculates the volumes of all the geometric objects. It provides a high-frequency range of operation. More maintenance is required in closed-loop control system. The closed-loop system is more accurate than the open-loop system because of controlling through the output signal. Operation of this system is fast inexpensive and the disadvantages are it i