using compile flag ' -framework CoreFoundation'

change_current_dir_to_app_resource.cpp

#ifdef __APPLE__
#include "CoreFoundation/CoreFoundation.h"
#endif

#include <iostream>

int main() {
    #ifdef __APPLE__
        CFBundleRef mainBundle = CFBundleGetMainBundle();
        CFURLRef resourcesURL = CFBundleCopyResourcesDirectoryURL(mainBundle);
        char path[PATH_MAX];
        if (!CFURLGetFileSystemRepresentation(resourcesURL, TRUE, (UInt8 *)path, PATH_MAX))
        {
            // error!
        }
        CFRelease(resourcesURL);

        chdir(path);
        std::cout << "Current Path: " << path << std::endl;
    #endif
    return 0;
}