Write a Processing program that allows the user to toggle between pictures of a surprised face and an

angry face. When your program starts, it should display a picture of a surprised face. Whenever the user

clicks the mouse, it should display and angry face $($if an angry face was already displayed, well then it

should keep displaying an angry face$).$ Whenever the user presses any key, it should display a surprised

face $($again$,$ regardless of whether a surprised face was already being displayed$).$ In this way, the user can

toggle back and forth between the pictures of the two faces as many times as they like