#include <stdio.h>
#include <dos.h>
#include <fcntl.h>

void main()
{
    int handle;

    if( _dos_open( "file", O_RDONLY, &handle ) != 0 ) {
        printf( "Unable to open file\n" );
    } else {
        if( _dos_commit( handle ) == 0 ) {
            printf( "Commit succeeded.\n" );
        }
        _dos_close( handle );
    }
}