:?: what i smeant my linker error in c++.?
why it causes in c++?
satish.paluvai -1 Light Poster
Lerner 582 Nearly a Posting Maven
In my experience it means the linker isn't able to find a function/variable in any of the header files included. Often it means the necessary header file isn't included or the function/variable isn't available in the files included.
Duki 552 Nearly a Posting Virtuoso
Usually when I've recieved this error, I'ved noticed my function prototype's formal parameters don't match my function's actual parameters.
John A 1,896 Vampirical Lurker Team Colleague
Or you've just completely forgotten to code the function...
Anyway, that's a good reason why to code each function separately, and not try to code 3-4 of them before testing out the program.
satish.paluvai -1 Light Poster
no.no.. I just used the keyword extern, it is giving the error
aian 0 Newbie Poster
no.no.. I just used the keyword extern, it is giving the error
Maybe your extern variable is referring to nothing or can't be found. Be sure to have that variable declared globally in other source file.
vijayan121 1,152 Posting Virtuoso
another possibility is that the variable or
function is defined in more than one file.
in this case your error message would look
like
'multiple definition of <identifier>'
or
'one or more multiply defined symbols'
if you tried to declare a variable in another file
extern int first = 0 ; // definition - multiply defined
extern int second ; // declaration - ok Be a part of the DaniWeb community
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