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It depends on the type of file, also.<br />
<br />
You can only &quot;rewind&quot; a stream if it is seekable. Some streams aren't seekable, so you would have to use ungetc() to actually push characters back onto the stream.<br />

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It depends on the type of file, also.

You can only "rewind" a stream if it is seekable. Some streams aren't seekable, so you would have to use ungetc() to actually push characters back onto the stream.


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But pushing characters back on a stream will alter the stream contents correct? &nbsp;What if the stream is read-only?
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But pushing characters back on a stream will alter the stream contents correct?  What if the stream is read-only?

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Hi<br />
I have some C code where I have a <br />
char myChar = fgetc(file);<br />
<br />
What I want to do next is &quot;rewind&quot; two characters back so the next time i call fgetc(file) it will give me the character that came before my <br />
char myChar = fgetc(file);<br />
<br />
Thanks,<br />
Sean<br />

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Hi
I have some C code where I have a 
char myChar = fgetc(file);

What I want to do next is "rewind" two characters back so the next time i call fgetc(file) it will give me the character that came before my 
char myChar = fgetc(file);

Thanks,
Sean


Best way to rewind a file stream one character in c not c++

C is a general-purpose, imperative computer programming language, supporting structured programming, lexical variable scope and recursion, while a static type system prevents many unintended operations. By design, C provides constructs that map efficiently to typical machine instructions, so it has found lasting use in applications that had formerly been coded in assembly language, including operating systems as well as various application software for computers ranging from supercomputers to embedded systems. It is distinct from C++ (which has its roots in C) and C#, and many later languages have borrowed directly or indirectly from C.