trailingzeros.asm

%include 'functions.asm'

section .bss
num resb LEN
section .data
section .text
global _start

_start:


    mov eax,SYS_READ
    mov ebx,STDIN
    mov ecx,num
    mov edx,LEN
    int 80h

    mov ebx,1    ;divident
    mov ecx,0    ;number of zeros
    mov edx,5    ;to multiply the divident
    mov eax,0    ;quotient of divison
 loop:
    add ecx,eax  ;add the quotient of result
    mov eax,ebx  ;move divident to eax
    mov edx,5    ;move 5 to edx to multiply
    mul edx      ;multiply last divident with 5
    mov ebx,eax  ;move divident to ebx

    mov eax,num  ;move number to eax to call atoi
    call atoi

    div ebx      ;divide number by current divident
    cmp eax,1    ;if quotient is less than 1 finish
    jge loop


out:
    mov eax,ecx   ;move result to eax to print

    call iprintLF

    call quit