gpib_read_c

	status.i4.v = gpib_read_c(string.i1a.r, num_chars.i4.v,
				  gpib_address.i4.v)

	This routine reads data from a GPIB device.  This call should be
	preceded by calls to gpib_select_c and gpib_write_c.

	string		returned data string from GPIB device
	num_chars	number of bytes to return
			(If a value of zero is passed for this argument,
			 the maximum number of bytes for this device
			 will be read.)
	gpib_address	device's GPIB address (0-255)
			(This argument is not used for connections made
			 by IP name.)

	This function returns ACNET status values as follows:

	OK			success
	CBS_INVARG		invalid device address
	CBS_NODAT		VME interface device could not be retrieved
				for this GPIB address
	otherwise		GAS error

	This function requires the following include files:

	cbslib_h, acnet_errors_h

	Related functions:

	gpib_read_binary_c, gpib_write_c, gpib_select_node_c,
	gpib_select_ip_name_c, gpib_close, gpib_select_c,
	gpib_serial_poll_c, gpib_local_c, gpib_reboot, gpib_clear_c,
	gpib_trigger_c, gpib_get_device_c, gpib_device_info_c,
	gpib_maximum_buffer_length

	C/C++ usage:

	char	string[NUM_CHARS];
	int	status;
	int	num_chars = NUM_CHARS;
	int	gpib_address = 0;

	status = gpib_read_c(string,num_chars,gpib_address);