Question

unformatted and formatted in c

Answer 1

UnformattedInput/Output is the most basic form of input/output.Unformatted input/output transfers the internal binary representation of the data directly between memory and the file.Formatted output converts the internal binary representation of the data to ASCII characters which are written to the output file.

Answer 2

Formatted files are human readable and can be typed to the terminal screen or edited with a text editor. However, formatted input/output is more computationally expensive than unformatted input/output because of the need to convert between internal binary data and ASCII text.