Description: AlphaC to create a sparse file, the generated files for the \ 0 bits between the two write, \ 0 is called a hole, a hole in the file is called a sparse file. An interesting feature of the sparse file, they belong to the file system, the hole can not actually occupy any disk blocks (and some system to fill the hole), which is why the total size of all files on the disk can exceed the disk capacity is due.
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c.cpp
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