Programa 5 leer un número desde teclado y determinar si es PAR o IMPAR - Simental Saul

by Simental777
Download
.cast - original recording .txt - plain text version .gif - animated GIF
GNU/Linux • xterm-256color • bash 148 views 
.section .data
buffer:     .skip 20
msg_par:    .asciz "PAR\n"
msg_impar:  .asciz "IMPAR\n"

.section .text
.global _start

_start:
    // Leer número desde stdin
    mov x0, #0              // STDIN
    ldr x1, =buffer         // buffer destino
    mov x2, #20             // máximo a leer
    mov x8, #63             // syscall read
    svc 0

    // Convertir string a entero (atoi)
    ldr x0, =buffer         // pasar puntero a string
    bl atoi                // devuelve el número en x0

    // Verificar si es par o impar
    and x1, x0, #1          // x1 = x0 & 1
    cmp x1, #0
    b.eq es_par

es_impar:
    ldr x1, =msg_impar
    b imprimir

es_par:
    ldr x1, =msg_par

imprimir:
    mov x0, #1              // STDOUT
    bl strlen               // calcular longitud en x0
    mov x2, x0              // x2 = longitud
    mov x0, #1              // STDOUT
    mov x8, #64             // syscall write
    svc 0

    // Exit
    mov x8, #93
    mov x0, #0
    svc 0

// ------------------ atoi: string -> entero ------------------
atoi:
    // Entrada: x0 = ptr al string
    // Salida: x0 = número convertido
    mov x1, #0              // acumulador
.next_digit:
    ldrb w2, [x0], #1
    cmp w2, #'0'
    blt .done
    cmp w2, #'9'
    bgt .done
    sub w2, w2, #'0'        // de ASCII a decimal
    mov x4, #10
    mul x1, x1, x4          // x1 *= 10
    add x1, x1, x2          // x1 += dígito
    b .next_digit
.done:
    mov x0, x1
    ret

// ------------------ strlen: longitud de string ------------------
strlen:
    // Entrada: x1 = puntero a string
    // Salida: x0 = longitud
    mov x2, x1
.loop:
    ldrb w3, [x2], #1
    cmp w3, #0
    b.ne .loop
    sub x0, x2, x1
    ret

More recordings by Simental777

Browse all

Practica 1 2:15

by Simental777

Programa 38 Calcular la mediana de una lista de números (9, 2, 7, 1, 5, 3). - Simental Saul 1:11

by Simental777

Programa 4 Imprimir los enteros pares del 2 al 48 - Simental Saul 1:01

by Simental777

Programa 7 Convertir 32 pulgadas a cm - Simental Saul 1:07

by Simental777
Share this recording
https://asciinema.org/a/713092
Copied!

Append ?t=30 to start the playback at 30s, ?t=3:20 to start the playback at 3m 20s.

See sharing docs for more link customization options.

Embed as image link

Use snippets below to display a preview image linking to this recording.
Ideal for places where scripts are not allowed, such as project README files.

HTML: 

<a href="https://asciinema.org/a/713092" target="_blank"><img src="https://asciinema.org/a/713092.svg" /></a>
Copied!

Markdown: 

[![asciicast](https://asciinema.org/a/713092.svg)](https://asciinema.org/a/713092)
Copied!

Embed the player

If you're embedding on your own page or on a site which permits script tags, you can use the full player widget:

<script src="https://asciinema.org/a/713092.js" id="asciicast-713092" async="true"></script>
Copied!

Paste the above script tag where you want the player to be displayed on your page.

See embedding docs for more player customization options.

Download this recording

You can download this recording in asciicast v2 format, as a .cast file.

Download

Replay in terminal

You can replay the downloaded recording in your terminal using the asciinema play command: 

asciinema play 713092.cast
Copied!

If you don't have asciinema CLI installed then see installation instructions.

Use with stand-alone player on your website

Download asciinema player from the releases page (you only need .js and .css file), then use it like this: 

<!DOCTYPE html>
<html>
<head>
  <link rel="stylesheet" type="text/css" href="/assets/asciinema-player.css" />
</head>
<body>
  <div id="player"></div>
  <script src="/assets/asciinema-player.min.js"></script>
  <script>
    AsciinemaPlayer.create(
      '/assets/713092.cast',
      document.getElementById('player'),
      { cols: 159, rows: 32 }
    );
  </script>
</body>
</html>

See asciinema player quick-start guide for full usage instructions.

Generate GIF from this recording

While this site doesn't provide GIF conversion at the moment, you can still do it yourself with the help of asciinema GIF generator utility - agg.

Once you have it installed, generate a GIF with the following command:

agg https://asciinema.org/a/713092 demo.gif
Copied!

Or, if you already downloaded the recording file:

agg demo.cast demo.gif
Copied!

Check agg --help for all available options. You can change font family and size, select color theme, adjust speed and more.

See agg manual for full usage instructions.