Looks like you're trying to execute the library file. That's not how programs work. You run an executable (the program you built that contains a main function) and that program calls functions from this library.
i want to treat the whole one as complete project building and want to build on my own.
Please suggest a way to build the whole project.
Also i can understand the function int main and in which file of cpp it has to implement so that whole project will compile without throughing library error.
You're using VS. This download contained a "sln" file. That is a "solution" file. It contains many, many, many projects. There is no one "whole project". Some of those projects are libraries, and some of those projects are executables (which use the libraries).
**how to solve invalid keystore error in android studio here is error report----------------------->
here is error report--------> error:Error:java.lang.RuntimeException: com.android.ide.common.signing.KeytoolException: Failed to read key palash from store "D:\MyApplication3.idea\workspace.xml": Invalid keystore format ...