Circular Buffer exercise in C++

[proper compass]

Uh, that is a CPP thing. trmplated code, if put in a header, must also contain its definition.

https://www.learncpp.com/cpp-tutorial/function-template-instantiation/ Read the section show templates in multiple times for a good explanation

The tldr version is: "put the template"s definitions into the header file"

[stoic sky]

Increase your chance of getting help and look like a pro by sharing codeblocks not images. For example, you can type the following. Note, the ``` must be on their own line.
```
for number in range(10):
total += number;
```
Discord will render that as so:

for number in range(10):
    total += number;

Click here to learn more about codeblocks: https://exercism.org/docs/community/being-a-good-community-member/writing-support-requests and http://bit.ly/howto-ask

[ruby hemlock]

Thanks.