readFileRoot.c File Reference

#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdio.h>
#include <errno.h>
#include <string.h>

Go to the source code of this file.

Functions
int	main (int argc, char *argv[])

---

Function Documentation

int main	(	int	argc,
		char *	argv[]
	)

Definition at line 26 of file readFileRoot.c.

{
    int   file;
    int   num, i, j;
    int   lidos;
    char  header[ 64 ];

    for( j = 1; j < argc; j++ )
    {
        i    = 0;
        file = open( argv[ j ], O_RDONLY );
        if( file > 0 )
        {
            lidos = read( file, (char *)&header, 64 );
            if( lidos != 64 )
            {
                fprintf( stdout, "main erro ao ler o valor de header: lidos %u", 
                         lidos);
                fprintf( stdout, " bytes de um total de 64 bytes.\n" );
            }
            else if( lidos == -1 )
            {
                fprintf( stdout, "main erro %u (%s) ao ler o valor de header\n",
                          errno, strerror( errno ) );
            }
            while( read( file, (char *)&num, 4 ) == 4 )
            {
                 fprintf( stderr, "%4d ", num );
                 if( ++i % 2 == 0 )
                     fprintf( stderr, "\n" );
            }
            close( file );
        }
        else
            fprintf( stderr, "Nao consegui abrir o arquivo\n" );
    }

    return( 0 );
}