Izvedba nadgrajevanja programske opreme (update)

#include <windows.h>

bool fileExists(const char* fileName)
{
	WIN32_FIND_DATA findData;
	HANDLE handle = FindFirstFileA(fileName, &findData);
	bool result = (handle != INVALID_HANDLE_VALUE);
	if (result)
		FindClose(handle);
	return result;
}

int main(int argc, char* argv[])
{
	if (argc != 2)
		return 1;

	// If source file exists
	if (!fileExists(argv[1]))
		return 1;

	bool fileCopied;
	do
	{
		// Copy target file over source file
		fileCopied = CopyFileA(argv[1], argv[2], false);
		if (!fileCopied)
			Sleep(10);
	}
	while (fileCopied);

	STARTUPINFO si;
	PROCESS_INFORMATION pi;

	// Run new exe file
	CreateProcessA(argv[2], 0, 0, 0, false, 0, 0, 0, &si, &pi);

	return 0;
}