Error C2998: & #39; XXXXXXX & #39;: possible cause of cannot be a template definition.

From the literal meaning of the error message, XXXXX cannot be defined as a template.

But why not? I did not explain why. Finally, I looked at various materials. After various attempts, I found that it was often caused by the failure to find a parameter definition of the template function.

1 template <typename T> 2 BOOL Func (T & t_vaule, MyStruct & st );

If you do not define the MyStruct struct or forget to introduce the MyStruct header file, the above function reports the C2998 error.

If some STL containers are used for a parameter of your template function, do not forget to introduce the corresponding header file or add the namespace std.