task1.2.asm

_f proc near
  var_10 = dword ptr -10h
  var_9 = byte ptr -9
  input = dword ptr 8
  push ebp
  mov ebp, esp
  sub esp, 18h
  jmp short loc_8048410
loc_804840C:
  add [ebp+input], 4
loc_8048410:
  call ___ctype_b_loc
  mov edx, [eax]
  mov eax, [ebp+input]
  mov eax, [eax]
  add eax, eax
  lea eax, [edx+eax]
  movzx eax, word ptr [eax]
  movzx eax, ax
  126and eax, 2000h
  test eax, eax
  jnz short loc_804840C
  mov eax, [ebp+input]
  mov eax, [eax]
  mov [ebp+var_9], al
  cmp [ebp+var_9], ’+’
  jz short loc_8048444
  cmp [ebp+var_9], ’-’
  jnz short loc_8048448
  loc_8048444:
  add [ebp+input], 4
  loc_8048448:
  mov [ebp+var_10], 0
  jmp short loc_8048471
  loc_8048451:
  mov edx, [ebp+var_10]
  mov eax, edx
  shl eax, 2
  add eax, edx
  add eax, eax
  mov edx, eax
  mov eax, [ebp+input]
  mov eax, [eax]
  lea eax, [edx+eax]
  sub eax, 30h
  mov [ebp+var_10], eax
  add [ebp+input], 4
  loc_8048471:
  call ___ctype_b_loc
  mov edx, [eax]
  mov eax, [ebp+input]
  mov eax, [eax]
  add eax, eax
  lea eax, [edx+eax]
  movzx eax, word ptr [eax]
  movzx eax, ax
  and eax, 800h
  test eax, eax
  jnz short loc_8048451
  cmp [ebp+var_9], 2Dh
  jnz short loc_804849A
  neg [ebp+var_10]
loc_804849A:
  mov eax, [ebp+var_10]
  leave
  retn
_f endp