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std::clearerr

From cppreference.com
< cpp‎ | io‎ | c
 
 
 
C-style I/O
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(C++11)(C++11)(C++11)    
(C++11)(C++11)(C++11)    
 
Defined in header <cstdio>
void clearerr( std::FILE * stream );

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

[edit] Parameters

stream - the file to reset the error flags for

[edit] Return value

(none)

[edit] 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

[edit] See also

checks for the end-of-file
(function) [edit]
displays a character string corresponding of the current error to stderr
(function) [edit]
checks for a file error
(function) [edit]
C documentation for clearerr
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