Cannot print a number in NASM

Question

I have just started to learn assembly (for a hobby) and I have made this small program that gets a number from the user and prints it out:

section .data:
        message: db "please enter a number: "           ;define message to "please enter a number"
        message_length equ $-message                    ;define message_length to $-message the lenght of the message
        message_done: db "you have entered the number " ;define message_done to "you have entered the number "
        message_done_length equ $-message               ;define message_done_length to the $-message_done the length of message_done
section .bss:
        num resb 5              ;num will store the input the user will give

section .text:
        global _start
_start:
        mov eax, 4              ;set the next syscall to write
        mov ebx, 1              ;set the fd to stdout
        mov ecx, message        ;set the output to message
        mov edx, message_length ;set edx to the length of the message
        int 0x80                ;syscall

        mov eax,3               ;set the next syscall to read
        mov ebx, 2              ;set the fd to stdout
        mov ecx, num            ;set the output to be num
        mov edx, 5              ;set edx to the length of the num
        int 0x80                ;syscall

        mov eax, 4                      ;set the syscall to write
        mov ebx, 1                      ;set the fd to stout
        mov ecx, message_done           ;set the output to the message
        mov edx, message_done_length    ;set edx to the message_done_length
        int 0x80                        ;syscall

        mov eax, 4              ;set the syscall to write
        mov ebx ,1              ;set the fd to stdout
        mov ecx, num            ;set the output to num
        mov edx, 5              ;the length of the message
        int 0x80                ;syscall

        mov eax, 1              ;set the syscall to exit
        mov ebx, 0              ;retrun 0 for sucsess
        int 0x80                ; syscall

When I run this and enter a number followed be enter, I get this:

please enter a number: you have entered the number ����

What am I doing wrong?

Answer 1

use get_option() directly

get_option( string $option, mixed $default = false )

Parameters $option (string) (Required) Name of the option to retrieve. Expected to not be SQL-escaped.

$default (mixed) (Optional) Default value to return if the option does not exist.

example get_option('bg_color');

also, you can use this plugin to create an options page for your client https://wordpress.org/plugins/admin-options-pages/