int main() {
    int counterForward = 0;
    int counterBackward = 0;
    __asm {
        call Subroutine_IncrementCounter   ; 
        jmp EndMainProgram

      Subroutine_IncrementCounter:
        mov eax, counterForward
        inc eax
        mov counterForward, eax
        cmp eax, 5
        jz Subroutine_IncrementCounterPart2
        call Subroutine_IncrementCounter  ; // recursive call of subroutine
      Subroutine_IncrementCounterPart2:
        mov eax, counterBackward
        inc eax
        mov counterBackward, eax
        ret
  
    EndMainProgram :
        // counterForward is now 5
        // counterBackward is now 5
    }
}