Example Program rewrite.

[xypherx]

I have found a couple tutorials online to learn assembly, and I need help compiling one of them. The example compiles but my rewrite will not.

;EXAMPLE 
.386
.model flat, stdcall
option casemap :none
include \masm32\include\windows.inc
include \masm32\include\kernel32.inc
include \masm32\include\masm32.inc
includelib \masm32\lib\kernel32.lib
includelib \masm32\lib\masm32.lib
.data
ProgramText db "Hello World!", 0
BadText db "Error: Sum is incorrect value", 0
GoodText db "Excellent! Sum is 6", 0
Sum sdword 0
.code
start:
; eax
mov ecx, 6 ; set the counter to 6 ?
xor eax, eax ; set eax to 0 0
_label: add eax, ecx ; add the numbers ?
dec ecx ; from 0 to 6 ?
jnz _label ; 21
mov edx, 7 ; 21
mul edx ; multiply by 7 147
push eax ; pushes eax into the stack
pop Sum ; pops eax and places it in Sum
cmp Sum, 147 ; compares Sum to 147
jz _good ; if they are equal, go to _good
_bad: invoke StdOut, addr BadText
jmp _quit
_good: invoke StdOut, addr GoodText
_quit: invoke ExitProcess, 0
end start

Now here is my rewrite.

.386
.model flat, stdcall
option casemap :none

include \masm32\include\windows.inc
include \masm32\include\user32.inc
include \masm32\include\kernel32.inc
include \masm32\include\masm32.inc

includelib \masm32\lib\user32.lib
includelib \masm32\lib\kernel32.lib
includelib \masm32\lib\masm32.lib

.data
    SumError db      "Error: Sum is incorrect", 0
    Sucess   db      "The Sum is Correct", 0
    Sum      sdword  0
.code

start:
    mov     ecx, 6
    xor     eax, eax
_label: 
    add     eax, ecx
    dec     ecx
    jnz     _label
    mov     edx, 7
    mul     edx
    push    eax
    pop     Sum
    cmp     Sum, 147
    jz      _good
_bad:  
    invoke  StdOut, addr SumError
_good: 
    invoke  StdOut, addr Success
_exit: 
    invoke  ExitProcess, 0

end start

[minor28]

.data
SumError db "Error: Sum is incorrect", 0
Sucess db "The Sum is Correct", 0

_good:
invoke StdOut, addr Success