Access variable using extern in a paricular file

[nnk1220]

Hi ALL,

My question is :

I have 3 files: f1.c f2.c and f3.c

I have declared variable int a; in f1.c and int a; in f2.c.

Now I want to use the variable int a; in f3.c . But this variable corresponds to the variable in f2.c . How to do this ????

Thanks

[anonuser]

in short, don't. do you have some particular problem you're trying to solve?

[nnk1220]

@ anonuser :

Yes, there is a problem. When I try to access the variable in f3.c, the compiler picks the value of variable from any of the two files f1.c or f2.c.

[weaknessforcats]

Read this: http://bytes.com/topic/c/insights/73...obal-variables

[anonuser]

i realize that - my question is, why are you trying to have multiple copies of the variable by the same name? in general, it is bad practice to have variables outside function/class scope by DIFF names, let alone the same name. the linker can't distinguish between them.

what is the underlying reason you're doing this, please?