Tell me my screen resolution!

Question

Output the device's screen resolution in the specific format of [width]x[height] where [width] is replaced by the horizontal number of pixels and [height] is replaced by the vertical number of pixels. For example, an output could read 1440x900. Should there be multiple screens, report about the primary screen. You may not change the resolution as part of your inquiry.

Here is a non‑golfed ECMAScript code snippet achieving this task (unless privacy settings kick in).

console.log(window.screen.width + 'x' + window.screen.height)

Answer 1

JavaScript (ES6), 32 bytes

(_=screen)=>_.width+"x"+_.height

Outputs as function return. Add f= at the beginning and invoke like f(). Uses parameter-initializing to initialize the parameter _ to screen object. The rest is self-explanatory.

f=(_=screen)=>_.width+"x"+_.height
console.log(f())

Note: Passing an argument to this function will cause it to fail.

---

JavaScript (Previous Solution), 35 bytes

with(screen)alert(width+"x"+height)

Never thought I will one day use with! I don't think this can be golfed further.

Answer 2

TI-BASIC, 30 32 29 bytes (non-competing?)

*sigh* TI-BASIC takes an extra byte for every lowercase letter.

+2 thanks to @Timtech

-3 thanks to @Timtech

:If ΔX>.1
:Then
:Disp "96x64
:Else
:Disp "320x240

This only works because TI-BASIC can only be run on calculators with two different screen resolutions: 96 by 64 and 320 by 240. I just test to see which screen I have by setting the Zoom to something that is different depending on screen resolution then outputting the correct resolution.

I'm marking this as non-competing for now, since it is hard coded.

Answer 3

JavaScript (ES6), 32 bytes

_=>(s=screen).width+'x'+s.height

console.log((_=>(s=screen).width+'x'+s.height)())

Answer 4

macOS, bash, awk, grep, tr, 51 52 bytes

/*/*/sy*r SPDisplaysDataType|awk '/so/{print$2$3$4}'

Runs system_profiler, gets the SPDisplaysDataType information, searches for the first so in Resolution, and prints the screen resolution. For multiple screens, this prints all resolutions.

---

The prior, malcompliant variant:

/*/*/sy*r SPDisplaysDataType|grep so|tr -d 'R :a-w'

Answer 5

Javascript, 36 bytes

s=screen;alert(s.width+"x"+s.height)

Answer 6

Processing 3, 37 bytes

fullScreen();print(width+"x"+height);

fullScreen() causes the app to launch with the maximum dimensions - the display resolution. One byte less than the obvious

print(displayWidth+"x"+displayHeight);

Answer 7

AutoHotKey, 34 bytes

SysGet,w,0
SysGet,h,1
Send,%w%x%h%

Save this in a file with extension .AHK and run it from a command prompt

Answer 8

C (Windows), 79 78 77 bytes

Thanks to @Johan du Toit for saving a byte!

#import<windows.h>
#define G GetSystemMetrics
f(){printf("%dx%d",G(0),G(1));}

Answer 9

PowerShell, 67 60 55 Bytes

-7 thanks to Martin Ender

-5 (actually 12!) from Leaky Nun , Regex wizardry is beyond me.

This is long but not longer than the horrendous System.Windows.Forms.SystemInformation.PrimaryMonitorSize solution

(gwmi win32_videocontroller|% v*n)-replace" |x \d+\D+$"

first we Get-WmiObject(gwmi) to retrieve the Win32_VideoController object, which contains a member named VideoModeDescription, which is a string in the format of 1920 x 1080 x 4294967296 colors, then I run a regex replace to get correct format.

PS H:\> (gwmi win32_videocontroller|% v*n)-replace" |x \d+\D+$"
1920x1080

Answer 10

Mathematica, 51 bytes

SystemInformation[][[1,5,2,1,2,1,2,2,;;,2]]~Infix~x

This may not work for you depending on what devices you have connected (I don't know). This should always work (assuming you have at least one screen hooked up):

Infix[Last/@("FullScreenArea"/.SystemInformation["Devices","ScreenInformation"][[1]]),x]

Explanation

SystemInformation[] returns an expression of the form

SystemInformationData[{
  "Kernel" -> {__},
  "FrontEnd" -> {__},
  "Links" -> {__},
  "Parallel" -> {__},
  "Devices" -> {__},
  "Network" -> {__},
}]

We are interested in "Devices", which can be accessed directly as SystemInformation["Devices"] or as SystemInformation[][[1,5,2]]. The result will be a list of the form

{
  "ScreenInformation" -> {__},
  "GraphicsDevices" -> {__},
  "ControllerDevices" -> {__}
}

We want "ScreenInformation", which can be accessed either as SystemInformation["Devices","ScreenInformation"] or more succinctly as SystemInformation[][[1,5,2,1,2]]. The result will be of the form

{
  {
  "ScreenArea" -> {__},
  "FullScreenArea" -> {{0,w_},{0,h_}},
  "BitDepth" -> _,
  "Resolution" -> _
  },
  ___
}

The length of the list will be the number of screens you have connected. The first screen is SystemInformation[][[1,5,2,1,2,1]] and the width and height can be extracted as SystemInformation[][[1,5,2,1,2,1,2,2,;;,2]] Then we just insert an Infix x for the output format.

Answer 11

Java 7, 123 114 bytes

String f(){java.awt.Dimension s=java.awt.Toolkit.getDefaultToolkit().getScreenSize();return s.width+"x"+s.height;}

This method will not work in a headless installation of Java (like on TIO) because it uses the awt libraries. Under the hood, calling getScreenSize uses the Java Native Interface to call out (typically into a C library) for the screen width and screen height.

-9 bytes thanks to Olivier Grégoire for reminding me that I can return the string instead of printing it.

Answer 12

C#, 101 95 89 bytes

_=>{var s=System.Windows.Forms.Screen.PrimaryScreen.Bounds;return s.Width+"x"+s.Height;};

-6 bytes thanks to @TheLethalCoder by reminding me OP didn't mention about printing, so returning a string is also fine. And an additional -6 bytes by changing it to a lambda.

Answer 13

Bash + xrandr, 44 characters

read -aa<<<`xrandr`
echo ${a[7]}x${a[9]::-1}

xrandr belongs to the X server, on Ubuntu is provided by x11-xserver-utils package.

Sample run:

bash-4.3$ read -aa<<<`xrandr`;echo ${a[7]}x${a[9]::-1}
1920x1080

xrandr + grep + util-linux, 30 characters

xrandr|grep -oP '\d+x\d+'|line

Thanks to:

• Markasoftware for the regular expression (-11 characters)

Sample run:

bash-4.3$ xrandr|grep -oP '\d+x\d+'|line
1920x1080

Answer 14

Python 2, 73 bytes

from ctypes import*
u=windll.user32.GetSystemMetrics;
print u(0),'x',u(1)

Answer 15

Octave, 41 bytes

Thanks to @Arjun and @StephenS for corrections.

fprintf('%ix%i',get(0,'ScreenSize')(3:4))

0 is a handle to the root graphics object. Its property 'ScreenSize' contains the coordinates of the screen in pixels. The third and fourth entries give the desired information.

Answer 16

APL (Dyalog), 23 bytes

' '⎕R'x'⍕⌽⊃⎕WG'DevCaps'

⎕WG'DevCaps' Window Get Device Capabilities

⊃ pick the first property (height, width)

⌽ reverse

⍕ format as text

' '⎕R'x' Replace spaces with "x"s

Answer 17

ZX Spectrum Basic, 10 bytes

just for completeness:

PRINT "256x192"

outputs 256x192. The Spectrum has a fixed hardwired screen resolution.

Answer 18

Japt, 24 bytes

Ox`ØP(s×Çn)±d+"x"+ight

Test it online!

The compressed string represents with(screen)width+"x"+height. Ox evaluates this as JavaScript, and the result is implicitly printed.

Answer 19

C (SDL2 library) 113 88 84

(-4 chars due to @AppleShell 's help)

Yes. it compiles.

m[3];main(){SDL_Init(32);SDL_GetDesktopDisplayMode(0,m);printf("%dx%d",m[1],m[2]);}

Run with : gcc snippet.c -lSDL2 && ./a.out

Answer 20

xrandr + awk, 25 bytes

xrandr|awk /\*/{print\$1}

---

Answer 21

Python 2, 61 49 bytes

Thanks @Jonathan-allan, @felipe-nardi-batista

from Tkinter import*
print'%sx%s'%Tk().maxsize()

For single display setups, this matches the output from the site. This gives entire resolution for multiple displays.

Answer 22

bash + xdpyinfo 42 31 bytes

xdpyinfo|grep dim|cut -d' ' -f7

From man page:

xdpyinfo - is  a utility for displaying information about an X server.

@Floris @manatwork Thanks for saving a few bytes!

Answer 23

Processing, 51 bytes

void setup(){fullScreen();print(width+"x"+height);}

This outputs in this format: width height. Also, the program creates a window that is the size of the screen you are using (because every Processing program creates a window by default) and this program just outputs the height and the width of this window/sketch.

Answer 24

xdpyinfo + awk, 28 bytes

$ xdpyinfo|awk /dim/{print\$2}
3360x1050

Tested on Cygwin with dual heads.

Answer 25

Racket, 73 bytes

#!racket/gui
(let-values([(x y)(get-display-size #t)])(printf"~ax~a"x y))

Just discovered the (discouraged) shorthand for #lang. Saves a few bytes! Documentation for get-display-size.

Answer 26

Tcl/Tk, 40

puts [winfo screenw .]x[winfo screenh .]

Answer 27

Lithp, 116 bytes

((import html-toolkit)
(htmlOnLoad #::((var S(index(getWindow)screen))
(print(+(index S width)"x"(index S height))))))

(Line breaks added for readability)

Try it online!

Finally, my html-toolkit module gets some use! Only works in the Try it Online link, will not work from command line.

A few bytes could be saved if 1024 x 768 could be valid output. We just use (+ .. "x" .. ) to avoid print's implicit spacing.

Answer 28

Lua (löve framework),116 bytes

f,g=love.window.setFullscreen,love.graphics function love.draw()f(1)w,h=g.getDimensions()f(0>1)g.print(w.."x"..h)end

The programm changes first to fullscreen then it gets the width and height and prints it then :)

Answer 29

xrandr and sh, 23 bytes

$ set `xrandr`;echo $6x$8
3360x1050

Tested on a CentOS 5 box with display redirected to a Cygwin machine with two monitors. Here the full xrandr output is

$ xrandr
 SZ:    Pixels          Physical       Refresh
*0   3360 x 1050   ( 889mm x 278mm )  *0
Current rotation - normal
Current reflection - none
Rotations possible - normal
Reflections possible - none

Answer 30

Ruby + xrandr, 37 bytes

puts `xrandr`.split[7..9].join[0..-2]

Alternate solution (52 bytes):

puts `xrandr`.match(/t (\d+) (x) (\d+),/)[1..3].join