How to print the numeric value of a variable to the screen in Assembler using the Invoke command?

Question

assembler

I want to display the value of a variable in a window.

.386
.model flat, stdcall
option casemap:none

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

.data
num db 1
result db 0
.code
start:
mov ah,num
inc ah
mov [result],ah
invoke MessageBox, NULL, addr result, addr result, 0
invoke ExitProcess, NULL
end start

Result is not displayed.
Nothing is displayed, an empty window. If you do not display result, but declare and display a line, then it works. The number is not

Answer 1

You forgot to convert a number to a string.

Answer 2

You can use the str$ macro
i.e.:
Just to start, include a file with macros:
include c:\masm32\macros\macros.asm # путь свой