Arithmetic expressionThis is a follow up of Lab 7. Write a program that reads an expression in postfix notation, builds the expression tree and prints the expression in prefix and infix notationand evaluates the expression. Hint

Match each feature of e-publishing as an advantage, a disadvantage, a threat, or an opportunity. (choices) increased collaboration digitalized out-of-print versions monopoly over digital formats requirement for a specialized digital device pairs advantage of e-publishing disadvantage of e- opportunity for e- threat to e-

An endless cycle of creation and response on the internet is called

When early motion pictures played in movie theaters, they were often accompanied by live organ or piano music. which of the following are the most likely reasons that this happened? (select all that apply). the music was provided to distract audience members from the loud sounds made when filmstrips were changed. the music accompanied the movies because the movies were silent and audiences were used to hearing music during plays in theaters. the music usually was played before, and sometimes after the movie, as an alternative form of entertainment. the music viewers to interpret the dramatic action in the films.