%include "asm_io.inc"

segment .bss
string  resb    32


segment .text
global  main

main:

  enter 0,0     ; setup stack frame
  pusha

  mov   edx, 0
  mov   ecx, 0
  mov   ebx, 0

repeat: call    read_char

  sub   eax, 48
  mov   esi, eax
  mov   eax, ecx
  mov   ebx, 10
  mul   ebx
  mov   ecx, eax
  add   ecx, esi
  mov   byte [string+edx], al

  cmp   al, 0x0a
  jne   repeat
  mov   byte [string+edx-1], 0

  mov   eax, ecx
  call  print_int
  call  print_nl

  popa
  mov   eax, 0  ; return value
  leave         ; leave stack frame
  ret

repeat:
  call  read_char
  cmp   al, 0x0a
  je    exit_loop // exit the loop if enter
  //code as before
  jmp repeat //jump unconditionally to the beginning of the loop
exit_loop:
   mov   byte [string+edx-1], 0