Suppose you've decided to write a function template that you expect to use in many different source files. Suppose, further, that you haven't followed the basic advice of writing C templates in header files, but have instead done the following: Written only a declaration of the function template in a header file x.hpp (i.e., all you wrote in the header file is template and then the function's signature). Written the function template, including its body, in the corresponding source file x.cpp.

In this case, the compiler will try to correct the model type by both the form we used when we try and call the method with both the appropriate form variable. It type of function. Consequently, unless the function in another file is specified, the compiler cannot locate the digital strategy. The point to note here is that only when this code is used, the template code shall be compiled.

The construct component will therefore be efficient so in this case, its connection stage would fail. An undefined connection to the feature <function name> can constitute a possible error in this case. It rules, therefore, address the construction project problem. Furthermore, the template function throughout the main program is generally recommended. It can be solved alternatively because parameters of a template like <function name><type> could be specified throughout the CPP file.