C / C++ / MFC

unsinged __stdcall calculation(void*)
{
 // start real calculation
}

void CMyDialog::OnStart() {
 m_threadHandle = (HANDLE)_beginthreadex(NULL, 0, calculation, NULL, 0, &m_threadId);
};

void CMyDialog::OnCancel() {
 if (m_threadHandle) {
  TerminateThread(m_threadHandle, 0x13);
  CloseHandle(m_threadHandle);
 }
};

void calc(bool volatile f_stop) {
 for () {
  for () {
   for () {
    if (f_stop) goto exit_all_loop;
   }
  }
 }
exit_all_loop:
 // clean up all resources
}

bool f_stop = false; //global

void CMyDialog::OnCancel() {
 ::f_stop = true;
}

void Yield() {
 MSG msg;
 for (int j = 0; j < 100; j++) {
  if (PeekMessage(&msg, 0, 0, 0, PM_REMOVE)) {
   DispatchMessage(&msg);
  }
 }
}

void calc() {
 for () {
  for () {
   for() {
    // here is can quit calc
    Yield();
    if (f_stop) goto exit_all_loop;
   }
  }
 }
exit_all_loop:
 // clean up resources
}

#include <stdio.h>
#include <string.h>
void main()
{
  unsigned int i;
  char word[] ="VisualC++";
  for (i = 0; i<strlen(word); i++)
  {
    printf("%c|", word[i]);
  }
  printf("\n");
}

unsigned short us = (uniNumber[3] << 12) | (uniNumber[2] << 8) | (uniNumber[1] << 4) | uniNumber[0];
fwrite((char*) &us, sizeof (us), 1 , fp);