in c language, to call all function in main program

in c language

11. Write a main program that allows a user to use the functions in questions 1-10. The program contains an interactive menu. The menu has 10 options. Each option is on separate line with an option number and an option description as follows. 1- computing pi, 2-computing square root, 3-displaying primes, 4-processing grades, 5-computing tax, 6-solving quadratic, 7-computing factorial, B-counting file, 9-sorting file, 10- student file, 11-quit. The user enters an option number. Each option calls its function. If the function needs inputs then the menu program asks the user for inputs. If the function gives outputs then the menu program displays the outputs with appropriate messages. The menu program repeatedly displays the menu and asks for an option until the user quits. 11. Write a main program that allows a user to use the functions in questions 1-10. The program contains an interactive menu. The menu has 10 options. Each option is on separate line with an option number and an option description as follows. 1- computing pi, 2-computing square root, 3-displaying primes, 4-processing grades, 5-computing tax, 6-solving quadratic, 7-computing factorial, 8-counting file, 9-sorting file, 10- student file, 11-quit. The user enters an option number. Each option calls its function. If the function needs inputs then the menu program asks the user for inputs. If the function gives outputs then the menu program displays the outputs with appropriate messages. The menu program repeatedly displays the menu and asks for an option until the user quits