What are common linking errors in C++ and how can I fix them?

What are common linking errors in C++ and how can I fix them?

Common linking errors in C++ include unresolved externals, multiple definitions, and missing libraries. To fix them, ensure all necessary object files are included, check for typos in function names, and verify that all libraries are linked correctly.

Can you explain what unresolved externals mean?

Unresolved externals occur when the linker cannot find the definition of a function or variable that was declared but not defined. This usually happens if the implementation file is not included in the build.

How do I include a library in my project?

To include a library, you typically need to add the library's path to your project's settings and link against the library file in your build configuration.

What should I do if I have multiple definitions?

If you encounter multiple definitions, ensure that you are not defining the same function or variable in multiple source files. Use 'extern' for declarations in header files and define them in a single source file.