3.18 ASM(ASCII sequence in binary code) in the min cell size

//https://vk.com/evgenykravchenko0

                ___                                        ___                   ___
               /  /\                  ___                 /  /\                 /  /\
              /  /:/_                /__/\               /  /:/_               /  /:/_
             /  /:/ /\               \  \:\             /  /:/ /\             /  /:/ /\
            /  /:/ /:/_               \  \:\           /  /:/_/::\           /  /:/ /:/_
           /__/:/ /:/ /\          ___  \__\:\         /__/:/__\/\:\         /__/:/ /:/ /\
           \  \:\/:/ /:/         /__/\ |  |:|         \  \:\ /~~/:/         \  \:\/:/ /:/
            \  \::/ /:/          \  \:\|  |:|          \  \:\  /:/           \  \::/ /:/
             \  \:\/:/            \  \:\__|:|           \  \:\/:/             \  \:\/:/
              \  \::/              \__\::::/             \  \::/               \  \::/
               \__\/                   ~~~~               \__\/                 \__\/
                            ___
                           /__/\                ___                 ___
                           \  \:\              /  /\               /  /\
                            \  \:\            /  /:/              /  /:/
                        _____\__\:\          /__/::\             /__/::\
                       /__/::::::::\         \__\/\:\__          \__\/\:\__
                       \  \:\~~\~~\/            \  \:\/\            \  \:\/\
                        \  \:\  ~~~              \__\::/             \__\::/
                         \  \:\                  /__/:/              /__/:/
                          \  \:\                 \__\/               \__\/
                           \__\/

#include "stdafx.h"
#include <stdio.h>
#include <cstdlib>
#include <conio.h>

int main()
{
    char a;
    char b;
    char c;

    unsigned int first;
    unsigned int second;
    unsigned int third;

    int result_a = 0;
    int result_b = 0;
    int result_c = 0;

    printf_s("Enter 3 letters : ");

    a = _getche();
    b = _getche();
    c = _getche();

    first = a;
    second = b;
    third = c;

    printf_s(" \n \n In ASCII \n \n First letter = %d, second letter = %d, third letter = %d \n \n", a, b, c);

    _asm
    {

            mov esi, 1
            mov eax, first
            xor ebx, ebx
        lap :
            mov edx, 0


            jmp start

        zero :
            shl ebx, 1
            jmp zero_cont


        one :
            shl ebx, 1
            add ebx, 1

        zero_cont :
            inc edx
            cmp al, 0
            jz escape
            shl al, 1
            jc one
            jnc zero

        start :
            shl al, 1
            jc one
            inc edx
            jmp start

        escape :
            mov ecx, 8
            sub ecx, edx
            cmp ecx, 0
            jz result

        last_zeros :
            shl ebx, 1
        loop last_zeros

        result :

            cmp esi, 2
            jz result_two
            cmp esi, 3
            jz result_third

            mov result_a, ebx
            inc esi
            mov eax, second
            jmp lap

        result_two :

            mov result_b, ebx
            inc esi
            mov eax, third
            jmp lap

        result_third :
            mov result_c, ebx

                xor edx,edx

                test ebx, 0ffff0000h
                jnz four_byte

                test bx, 0ff00h
                jnz two_byte

                mov dl, bl
                jmp ended

        four_byte :
                mov edx, ebx
                jmp ended

        two_byte :
                mov dx, bx
                jmp ended

        ended :

    }

    printf_s(" 1. After  %d  ", result_a);
    printf_s("\n 2. After %d  ", result_b);
    printf_s("\n 3. After %d  ", result_c);


    system("pause");
    return 0;
}