11.3.    395

 iostream-			|  ios base 	J-i J	|  basic filebun	J	1  basic stringbuf
			r^-'		h		1
						-l J
			basic ios		^basic  streambuf	
							
			^				^--i J	
		I -	-i J					
	| I basicJstream		11 basicostream		
		-i J	t			"}J				
- 								-i J	| 
basic i ^ ifstream	I basic  istringstream		| l basic  iostream			. . 11 basic iostring stream		basic  ofstream
			^				-i J		
		| 	-i J						
	|  basic  stringstream		basic  fstream			

	pvmstream	
	4	> 4		
mutex	mios

. 11.4.  ,     
 iostream,    pvin_stream

11.3.1.   ""  ""
 PVM- 

,    ""  ""   pvm_stream.
  ()      
pvm_send ()  pvm_pk.       .

//  11.13.   ""  
//                pvm_stream class

pvm_sfcream &pvm_stream::operator(int Data)