#include <stdio.h>
#include <windows.h>
 int main()
{
     HKEY hMyKey;
     DWORD dwMyDw;
     const BYTE *data = "deneme";

     if (RegCreateKeyEx(HKEY_CURRENT_USER,"deneme\\deneme",
         0,NULL,0,KEY_ALL_ACCESS,NULL,&hMyKey,&dwMyDw) != ERROR_SUCCESS) {
             printf("hata\n");
             exit(EXIT_FAILURE);
     }

     RegSetValueEx(hMyKey,"anahtardeneme",0,REG_EXPAND_SZ,data,6);
     RegCloseKey(hMyKey);
     return 0;
}