This program displays a simple interactive menu where users can choose actions like saying hello, showing info, hearing a random joke, or exiting.

Line-by-line breakdown:

• Runs a loop that repeatedly shows the main menu until the user selects “Exit.”

• Takes user input to choose between options.

• Uses a switch statement to perform actions based on the user’s choice.

• Option 1 prints a friendly greeting.

• Option 2 displays program information.

• Option 3 exits the loop and ends the program.

• Option 4 randomly selects and displays a joke from a small list using a random number generator.

• Handles invalid inputs by showing an error message.