Question

Explain why most menu-driven programs use a loop to redisplay the menu after the user’s selected action has been performed.

Short answer

Answer: Loops are used in menu-driven programs to redisplay the menu after executing a user's selected action to maintain the flow of user interaction, allowing users to perform multiple actions during a single session. The loop ensures that the program is always ready to accept new user input and execute corresponding functions, providing a smooth and dynamic user experience. The loop will end when the user chooses the exit option or when an exit condition is met.

Step-by-step solution

Understanding menu-driven programs

Menu-driven programs are applications that present a list of options to the user, allowing them to choose an action by selecting one of the given options. These programs make it easy for users to interact with the application without needing to memorize commands or syntax. Examples of menu-driven programs include ATM software, point-of-sale systems, and many interactive applications.

The structure of menu-driven programs

A typical menu-driven program consists of multiple elements: the main menu, the user input to select an option, and the corresponding functions to execute the selected option. The program often has an exit condition, allowing the users to exit the application when they are done.

The importance of loops in menu-driven programs

In menu-driven programs, the user interacts with the application by selecting an action from the menu and providing input when prompted. Once the action is performed, the program will usually present the user with the same menu to choose another action or to exit. To achieve this functionality, a loop is utilized, such as a while loop or a do-while loop.

Steps in a menu-driven program loop

The following steps are typically followed in a menu-driven program loop: 1. Display the menu with a list of options. 2. Accept the user's input (selection). 3. Execute the function associated with the chosen option. 4. Return to step 1, displaying the menu again for the user to choose another action or exit.

Why loops are used to redisplay the menu

The reason why loops are used in menu-driven programs to redisplay the menu after executing the user's selected action is to maintain the flow of user interaction and to allow users to perform multiple actions during a single session. The loop ensures that the program is always ready to accept new user input and to execute the corresponding functions, providing a smooth and dynamic user experience. The loop will end when the user chooses the exit option or an exit condition is met.