build/examples/lib_use/simple.cpp

#include <cstdio>

extern int lib_call(int x);

int main(int /* argc */, char ** /* argv */)
{
	for (int i = 0; i < 16; ++i)
	{
		std::printf("%d * 2 = %d\n",i,lib_call(i));
	}
	return 0;
}