rewind()
Rewind a file stream to the beginning of the file
Synopsis:
#include <stdio.h> void rewind( FILE *fp );
Since:
BlackBerry 10.0.0
Arguments:
- fp
- The file stream that you want to rewind.
Library:
libc
Use the -l c option to qcc to link against this library. This library is usually included automatically.
Description:
The rewind() function rewinds the file stream specified by fp to the beginning of the file. It's equivalent to calling fseek() like this:
fseek( fp, 0L, SEEK_SET );
except that the error indicator for the stream is cleared.
Examples:
This example shows how you might implement a two-pass assembler:
#include <stdio.h> #include <stdlib.h> void assemble_pass( FILE *fp, int passno ) { printf( "Pass %d\n", passno ); /* Do more work on the fp */ switch( passno ) { case 1: /* do the first-pass work */ break; case 2: /* do the second-pass work */ break; default: break; } } int main( void ) { FILE *fp; fp = fopen( "program.s", "r" ); if( fp != NULL ) { assemble_pass( fp, 1 ); rewind( fp ); assemble_pass( fp, 2 ); fclose( fp ); return EXIT_SUCCESS; } puts( "Error opening program.s" ); return EXIT_FAILURE; }
Classification:
Last modified: 2014-06-24
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