Show the output - algorithms:
Where does the output go? The two possibilities are (i) to an external file, or (ii) to a window on the screen. Based on system, one of these will be the default output device. When showing the output from the program, it must always be as informative as possible. In another words, rather than of just printing the area, it must be printed in a nice sentence format. Also, to make the output even more clearly, the input must be printed. For illustration, the output might be the sentence: 'For a circle with radius of 1 inch, the area will be 3.1416 inches squared.'