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	Note: Stick to the standard C.
Your project will be 
		graded in Olympus. So you should periodically upload your code to 
		Olympus and
	Download all c files and data files from Olympus, *.c, *.h: simulator.c, obj1.c, obj2.c, obj3.c, obj4.c, obj5.c, obj6.c, osdefs.h, 
	externs.h
 *.dat: 
	boot.dat, compiler.dat, config.dat, editor.dat, linker.dat, logon.dat, 
	printer.dat, script.dat, user.dat
 and put them in one directory, for example, 
	c:\work
 
 Because the simulator defines two functions (strlwr and 
	strupr) that are already defined by Microsoft Visual C++, you could not
 successfully build the simulator with the files which are downloaded from 
	Olympus.
 You could modify 
	the externs.h and simulator.c by yourself (two functions are declared and 
	implemented in these two files).
 Comment out the the definitions and 
	implementation of those functions in our simulator.
 
 You could also just replace the original files 
	with modified 
	externs.h,
	simulator.cGoto externs.h and comment out their definition in line 84 and 85Goto simulator.c and comment out strlwr's implementation (line 
		910-918) and strupr's implementation (line 920-927).
 
 Remember that you 
	should not change simulator.c, externs.h or osdefs.h during your afterward 
	programming .
 
 
Open Microsoft Visual C++, then Select File->New->Win32 Console 
	ApplicationProject Name: sim
 Location: C:\Work
 Click "OK" buttion, then choose "An empty project" and click "Finish" 
	button.
 
 
	You will get an empty workspace. Menu Project->Add to Project->Files, select 
	all the source filesyou should be able to compile and run the 
	simulator, though you will get a lot of warnings. Don't worry about(including simulator.c, extern.h, osdefs.h, obj1.c, obj2.c, obj3.c, obj4.c, obj5.c, obj6.c)
 After the above steps,
those 
	warnings. Just skip them and go ahead!
 
 
 Write you own source code, debug and run it! make sure they work correctly.
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