1. Reading From/Writing To a File

Every input or output file seems to have two names. The actual name, or external file name, is the name of the file as it appears on your computer disk. The name of the stream used to read from/write to a file is often referred to as the internal file name. The internal name is actually the name of the stream that vou are using to read from/write to the input/output file. The following program reads a file containing some integer values (we do not know how many values). It displays the number, the number to the power of two, and the sum up to that point. At last, it displays the average of these numbers