未定義シンボルエラーをどのように解決するか

# Introduction

Undefined symbol errors are common challenges in C++ programming that often confuse beginners during the compilation and linking process. These errors occur when the compiler cannot find the implementation of a function or variable that is being used in your code. In this lab, you will learn how to identify, understand, and resolve various types of undefined symbol errors through practical hands-on examples.

By the end of this lab, you will have a solid understanding of the compilation and linking process, common causes of undefined symbol errors, and effective strategies to diagnose and fix these issues in your C++ projects.