C++ 'strcpy' gives a Warning (C4996)

Question

I am getting this warning but all functions working properly .

what does this really means?

\'strcpy\': This function or variable may be unsafe. 
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Answer 1

That warning is basically informing you that strcpy is deprecated, because copying a string until \0 can easily lead to nasty problems (buffer overruns). The reason strcpy is still there and works is that it is part of the standard library legacy, but you should really consider using str*_s or strn* functions (which don't exclusively rely on finding the terminating \0).

Since buffer overruns are linked not only to security problems, but also to bugs which are relatively difficult to trace and fix, using plain vanilla str* functions is not only generally frowned upon, but can lead to people rejecting your code as inherently unsafe.

More details: http://www.safercode.com/blog/2008/11/04/unsafe-functions-in-c-and-their-safer-replacements-strings-part-i.html