Error message of "this file does not be long to any project, code insight features might not work properly" in clion

Write it at the front ： During scientific research, due to the needs of the project , You need to download Mr. Li Ping's about IDMA A paper on , By the way, download the open source simulation package , Then build the system locally for data simulation .

After downloading, unzip and get multiple files , It includes two .cpp Documents and a .h file . stay CLion Create a new one in Project, Then add three files to the project , An error is reported when clicking run ：

Find out function EnergyProfile( ) Call failed , The function is defined in the header file energy.cpp in , stay energy.cpp The following errors are reported in the ：

intend ： This file does not belong to any project , Code functions may not work properly

This is because the header file is not linked to the whole project , as everyone knows ,C Language or C++ The source program of the language must be compiled and linked before it can become a binary executable file that can be processed by the computer . among , Compilation refers to the program based on the source code written by the user , High level language （ such as C Language ） Into assembly code that can be read by computer , This step is usually done by the compiler ; Link refers to , After compilation, an object file will be generated , This object file may call some functions （ such as printf function ）, Its object code is in the function library of the system , All the link has to do is combine the code in these function libraries into the target file .

simply , That means you have to communicate with a foreigner , At this time, you have to translate the spoken Chinese into English , Like compiling , Then some words may not be well understood. You need to look up the dictionary to translate accurately , Carrying an English Chinese dictionary with you is like a link .

therefore —— The solution is , stay CMakeLists.txt Of add_executable Add header file to energy.cpp, Pictured ：

  And then run the program , solve the problem ：

Postscript ： This example is .cpp Documents are C++ Code , Same thing ,C In language .c The link to the file is the same as in this example . Last , I wish you didn't write the code bug！！！