how do i add my own library funtions??

hi there ,
my name is nitin, i am quite new to programming and just started of with c programing.
i was doing some programs on recursive functions when i came across the part where
it said the i could reduce the compilation time of my program if i added my own function
to an already existing library such as math.lib.
i am using tc201 compiler.
this is what i had done
1,i made a function definition of my function i wanted to add in a file of .c extention,.
2.compiled the file ,it creats FILENAME.OBJ file.
3.add function to the library c:\>tlib math.lib+c:\FILENAME.obj
4.declared its prototype in a FILENAME.H file.
5.wrote a program to use the function ,#included the FILENAME.H as the url in double quotes.

now to the problem. when i compiled it gave me no error. but when i tried to run it gave me a linker error.

does this mean that my function that i tried to add didn't get added to the lib ??
please help.

Welcome to the forums!

How old are you? Turbo C 2.01 had its 16th birthday this year. Are you younger than it by any chance? If you have an 8086 and are running DOS 1.0 you have an excuse for running TurboC. Otherwise, get a compiler that has been updated since the fall of the Roman empire. Try Dev-C++. If you still wan't technical help with an antique, you'll need to invent a time machine.

> it said the i could reduce the compilation time of my program if i added my own function
>to an already existing library such as math.lib.
This is extremely bad advice. One update to your compiler and boom all your work has been lost.

> i am using tc201 compiler.
Your compiler is from the stone age.
I'll take a guess that your OS is XP.

I have added my own functions to a header file, not a library file.