Suppose you omitted the return statement in the function definition

for initialize_screen in Display 5.2. What effect would it have on the

program? Would the program compile? Would it run? Would the program

behave any differently? What about the return statement in the

function definition for show_results in that same program? What effect

would it have on the program if you omitted the return statement in

the definition of show_results? What about the return statement in the

function definition for celsius in that same program? What effect

would it have on the program if you omitted the return statement in

the definition of celsius?