#include <Windows.h>
#include <stdio.h>


int main()
{
    LPCWSTR g_fileName = L"C:\\hello\\world\\file.ext";

    WCHAR *fileExt;
    WCHAR szDestDir[256];
    WCHAR szDir[256];
    GetFullPathNameW(g_fileName,256, szDir,&fileExt);
    swprintf(szDestDir, L"C:\\Example\\%s", fileExt);
    MessageBoxW(NULL,szDestDir,L"Debug",MB_OK);

    return 0;
}