Question

I have the folowing code:

mov   ecx, 0
mov   eax, offset ReadWritten
RottenApple:
    push ecx
    push eax

    push 0
    push eax
    push 1
    push offset bytearray
    push consoleOutHandle
    call WriteConsole

    pop eax
    pop ecx
    inc     ecx
    inc     eax
    cmp     ecx, 10
    jne     RottenApple

The intention is to print, if the user input was “123456”, fist 1, then 2, etc… But it only print 10 1’s. Whats wrong with incrementing the offset,and why doesn’t it make any diference?

Answer 1

Note that eax is destroyed by the call to WriteConsole (it will contain the return value) so you have to save it just like you do with ecx.

Update:

On closer look, you are calling the WriteConsole with wrong arguments. You want to increment the offset, as you say in the question, but you are not doing that.
Try something like:

    mov   ecx, 0
    mov   eax, offset bytearray
RottenApple:
    push ecx
    push eax

    push 0
    push offset ReadWritten
    push 1
    push eax
    push consoleOutHandle
    call WriteConsole

    pop eax
    pop ecx
    inc     ecx
    inc     eax
    cmp     ecx, 10
    jne     RottenApple