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std::clearerr(3)	       C++ Standard Libary		std::clearerr(3)

NAME
     std::clearerr - std::clearerr

Synopsis
	Defined in header <cstdio>
	void clearerr( std::FILE* stream );

	Resets the error flags and the EOF indicator for the given file stream.

Parameters
	stream - the file to reset the error flags for

Return value
	(none)

Example
     // Run this code

      #include <cassert>
      #include <cstdio>

      int main()
      {
	  std::FILE* tmpf = std::tmpfile();
	  std::fputs("cppreference.com\n", tmpf);
	  std::rewind(tmpf);

	  for (int ch; (ch = std::fgetc(tmpf)) != EOF; std::putchar(ch)) { }

	  assert(std::feof(tmpf)); // the loop is expected to terminate by EOF
	  std::puts("End of file reached");

	  std::clearerr(tmpf); // clear EOF

	  std::puts(std::feof(tmpf) ? "EOF indicator set"
				    : "EOF indicator cleared");
      }

Output:
      cppreference.com
      End of file reached
      EOF indicator cleared

See also
	feof   checks for the end-of-file
	       (function)
	perror displays a character string corresponding of the current error to
     stderr
	       (function)
	ferror checks for a file error
	       (function)
	C documentation for
	clearerr

http://cppreference.com 	   2024.06.10			std::clearerr(3)
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