Why doesn't this work (random Keyboard)

I have been working on this for two days it works fine but it prints like a million things and stuff outside of the alphabet. a few times its printed the time I have no clue what to do please help here's my code.

#include <Windows.h>

#include <stdio.h>
#define _WIN32_WINNT 0x050

LRESULT CALLBACK LowLevelKeyboardProc(int nCode, WPARAM wParam, LPARAM lParam)
{
    BOOL eatKey = FALSE;
    static const char alphanum[] =
        "0123456789"
        "!@#$%^&*"
        "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
        "abcdefghijklmnopqrstuvwxyz";
    if (nCode == HC_ACTION)
    {
        switch (wParam)
        {
        case WM_KEYDOWN:
        case WM_SYSKEYDOWN:
        case WM_KEYUP:
        case WM_SYSKEYUP:
        PKBDLLHOOKSTRUCT p = (PKBDLLHOOKSTRUCT)lParam;//cotains low level keyboard inuts





                if ((wParam == WM_KEYDOWN) || (wParam == WM_SYSKEYDOWN)) // Keydown
                {
                    keybd_event(alphanum[rand() % 69], 0, 0, 0);
                }
                else if ((wParam == WM_KEYUP) || (wParam == WM_SYSKEYUP)) // Keyup
                {
                    keybd_event(alphanum[rand() % 69], 0, KEYEVENTF_KEYUP, 0);
                }
                break;

            break;
        }
    }
    return eatKey ? 0 : CallNextHookEx(0, nCode, wParam, lParam);
}
int main()
{
    // Install the low-level keyboard & mouse hooks
    HHOOK hhkLowLevelKybd = SetWindowsHookEx(WH_KEYBOARD_LL, LowLevelKeyboardProc, 0, 0);

    // Keep this app running until we're told to stop
    MSG msg;
    while (GetMessage(&msg, NULL, WM_KEYFIRST, WM_KEYLAST)) {    //this while loop keeps the hook
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }

    UnhookWindowsHookEx(hhkLowLevelKybd);

    return(0);
}