rares

bits 32 ; assembling for the 32 bits architecture

; declare the EntryPoint (a label defining the very first instruction of the program)
global start

; declare external functions needed by our program
extern exit,scanf,printf               ; tell nasm that exit exists even if we won't be defining it
import exit msvcrt.dll    ; exit is a function that ends the calling process. It is defined in msvcrt.dll
import scanf msvcrt.dll                           ; msvcrt.dll contains exit, printf and all the other important C-runtime specific functions
import printf msvcrt.dll
; our data is declared here (the variables needed by our program)
segment data use32 class=data
    a dd 0
    b dd 0
    nr dd 0
    format_citire db "%u %u %u",0
    format_afisare db "%u",10,0
; our code starts here
segment code use32 class=code

    interval:
    ;functie ce determina daca un nr apartine unui interval inchis (interpretare fara semn)
    ;input: nr, a, b - dword
    ;output: -
    ;post: eax 0 nu; eax 1 da
        mov eax, 1
        mov ebx, [esp+4];nr
        mov ecx, [esp+8];a
        mov edx, [esp+12];b

        cmp ebx,ecx
        jb .nu_e

        cmp ebx,edx
        ja .nu_e

        ret

        .nu_e:

        mov eax, 0
        ret


    start:

        .bucla:
            push dword b
            push dword a
            push dword nr
            push dword format_citire
            call [scanf]
            add esp,4*4

            cmp dword [nr],0
            je .gata

            push dword [b]
            push dword [a]
            push dword [nr]
            call interval
            add esp,4*3

            push eax
            push dword format_afisare
            call [printf]
            add esp, 4*2


        jmp .bucla

        .gata:
        push    dword 0      ; push the parameter for exit onto the stack
        call    [exit]       ; call exit to terminate the program