Now, I understand that CS.LIB's for the Math Model Library.

Atleast the linker says linking to as GRAPHICS.LIB.

Now upon doing tlink /x linechar.obj, graphics.lib.

When I run the program after successful compilation,
I get the following error:

LINKER ERROR: Illegal OBJ record in file .\GRAPHICS.LIB


When I enter tlink /x linechar.obj, graphics.lib at command prompt,
I get the following errros:

Turbo Link Version 2.0 Copyright (c) 1987, 1988 Borland International
Undefined symbol '_CLOSEGRAPHICS' in module LINECHAR.C
Undefined symbol '_SLEEP' in module LINECHAR.C
Undefined symbol '_SETCOLOR' in module LINECHAR.C
Undefined symbol '_SETBKCOLOR' in module LINECHAR.C
Undefined symbol '_OPENGRAPHICS' in module LINECHAR.C
Undefined symbol '_EXIT' in module LINECHAR.C
Undefined symbol '_FPRINTF' in module LINECHAR.C
Undefined symbol '__STREAMS' in module LINECHAR.C
Undefined symbol '_PPOLYMARKER' in module LINECHAR.C
Undefined symbol '_PPOLYLINE' in module LINECHAR.C
Undefined symbol '_PTEXT' in module LINECHAR.C
Undefined symbol 'SPUSH@' in module LINECHAR.C
Undefined symbol 'FIWRQQ' in module LINECHAR.C
Undefined symbol 'FIDRQQ' in module LINECHAR.C
Undefined symbol '_FCLOSE' in module LINECHAR.C
Undefined symbol '_FSCANF' in module LINECHAR.C
Undefined symbol '_FOPEN' in module LINECHAR.C
Warning: no stack

Hope this information helps