a. Using Geany, ask the user for a warship class by a letter ('S', 'C', 'D', 'F' and 'A'). Use a switch statement to display the warship class name (S for Submarine, C for Cruiser, D for Destroyer, F for Frigate and A for Aircraft Carrier). Display a message that the ship is unknown if the user enters any other letter. (Note: accept also the lowercase version of the letters)