C
provides two levels of file handling; these can be called high level and low
level. High level files are all treated as text files. In fact, the data which
go into the files are exactly what would be seen on the screen, character by
character, except that they are stored in a file instead. This is true whether
a file is meant to store characters, integers, floating point types. Any file,
which is written to by high level file handling functions, ends up as a text
file which could be edited by a text editor
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