#include <TlHelp32.h>

int get_thread_amount()
{
    int i = 0;
    char Buff[9];
    PROCESSENTRY32 pe32;
    pe32.dwSize = sizeof(pe32);

    int processid = GetCurrentProcessId();
    HANDLE hProcessSnap = ::CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
    if (hProcessSnap == INVALID_HANDLE_VALUE)
    {
        printf("CreateToolhelp32Snapshot() failed. error code:%d.\n", GetLastError());
        return 0;
    }
    BOOL bMore = ::Process32First(hProcessSnap, &pe32);

    HANDLE hProcess;

    while (bMore)
    {
        if (pe32.th32ProcessID == processid)
        {
            return pe32.cntThreads;
        }

        bMore = Process32Next(hProcessSnap, &pe32);
        i++;
    }

    return 0;
}