Ring buffer implementation linker error [duplicate] - c++

Question

This question already has answers here:
What is an undefined reference/unresolved external symbol error and how do I fix it?
(39 answers)
error LNK2019 unresolved external symbol
(1 answer)
Closed 8 years ago.
I am implementing a Ring Buffer construct in C++ in the course of a workshop we are going through.
Now, the source code may be okay, but the linker just won't work properly - or more likely my code or project settings.
Header:
http://pastie.org/private/rbx84gvlzc9ipzk1mzczg
Source:
http://pastie.org/private/kkjjhwywfljgnw75jlmxsq
The build process says:
1>------ Build started: Project: RingBuffer, Configuration: Debug
Win32 ------ 1> RingBuffer.cpp 1>RingBuffer.obj : error LNK2019:
unresolved external symbol "public: __thiscall
RingBuffer::RingBuffer(int)" (??0RingBuffer##QAE#H#Z) referenced in
function _main 1>C:\Users*.*\Documents\Visual Studio
2013\Projects\RingBuffer\Debug\RingBuffer.exe : fatal error LNK1120: 1
unresolved externals
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========
Thanks in advice for any helpful suggestions.

Answer 1

You have not defined the constructor
RingBuffer(int storageAmount);
You gave definition of
RingBuffer();
But using the previous one in main.
This is clear from the error message
unresolved external symbol public: __thiscall RingBuffer::RingBuffer(int)
Linker can not find the method to link.