Question

I know we can use WriteFile to write something to a file:

BOOL WINAPI WriteFile (HANDLE hFile, 
                       LPCVOID lpBuffer, 
                       DWORD numOfBytesToWrite,
                       LPDOWRD lpNumOfBytesWritten,
                       LPOVERLAPPED lpOverlapped);

But how can we write ASCII string to a file using this function?

Answer 1

Usually something like this:

WriteFile(your_file, your_string, strlen(your_string), &written, NULL);

You usually don’t want to do this though — unless your strings are pretty long, it’ll almost always be more efficient (i.e., faster) if you use something like fprintf or fputs to take advantage of the buffering built into the standard library.