I need to accept user input of a three digit number and convert it to an int. This is my code so far but it is not working.

the program is for x86 nasm on gl server (64 bit linux)

;accept input

mov eax, 3 mov ebx, 0 mov ecx, num mov edx, 6 int 0x80

;converting three digit number:

mov eax, [num] and eax, 0xff sub eax, '0' mov ebx, 10 mul ebx mov [num], eax

mov eax, [num+1] and eax, 0xff sub eax, '0' add eax, [num] mov ebx, 10 mul ebx mov [num], eax

mov eax, [num+2] and eax, 0xff sub eax, '0' add eax, [num] mov ebx, 10 mul ebx mov [num], eax

; print to screen

mov ebx,1 mov eax,4 mov ecx, num mov edx, 6 int 0x80