// In your DLL project extern "C" __declspec(dllexport) double add(double a, double b) { return a + b; } // In your application #include <Windows.h>
#include <Windows.h>
int main() { HMODULE hModule = LoadLibrary(L"MathLibrary.dll"); if (hModule) { typedef double (*addFunc)(double, double); addFunc add = (addFunc)GetProcAddress(hModule, "add"); if (add) { double result = add(5.0, 7.0); // Use result } FreeLibrary(hModule); } return 0; } Developing DLLs allows for powerful, modular programming on Windows platforms. Whether you're creating a utility library, integrating with legacy code, or planning for scalability, understanding how to design and implement DLLs is a valuable skill. If "ldr.dll" refers to something more specific, providing additional context would help in giving a more tailored explanation or guide.