If you have coded a template class and use it from VC++, you will get a LNK2001 error message on template member functions. This is because Microsoft deviates a bit from C++ specifications. To reproduce the problem, do the following:
1. Declare a template class.
//HastTable.htemplate l;class HastTable{public: static float bar; void foo();}//HastTable.cppint HashTable::bar; //allocate the static variable in templateclass.template HastTable::foo(){//do something}
2. Try to use HashTable from your main program.#include 
