Constants

In Rust, constants are values that are bound to a name and are not allowed to change. Constants are always immutable and are declared using the const keyword. They must be annotated with their type, and they can be set only to a constant expression.

In this challenge, you will define and use a constant in Rust. This will help you understand how to declare constants and how they can be utilized in your programs.

Your task

Define a constant named MAX_SIZE with a value of 100.
Ensure that MAX_SIZE has the type i32.
Return the value of MAX_SIZE from the main function.
Make sure you make the constant public using the pub keyword (important for the tests to pass).
Remember that constants can only be defined at the global scope. You can not define them inside a function.

Hints

Use the const keyword to define the constant.
Ensure you specify the type of the constant explicitly.

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Solutions

Melkzedek Choti

chotixity

an hour ago

5.30ms

86.04kb

// Define a constant MAX_SIZE with a value of 100.
// NOTE: Define the constant outside the main function
// Your code here
pub const MAX_SIZE: i32 = 100;
pub fn main() -> i32 {
    MAX_SIZE
}

avk458

2 hours ago

3.87ms

85.92kb

// Define a constant MAX_SIZE with a value of 100.
// NOTE: Define the constant outside the main function
// Your code here
pub const MAX_SIZE: i32 = 100;
pub fn main() -> i32 {
    MAX_SIZE
}

iamforgettable

4 hours ago

4.20ms

86.04kb

// Define a constant MAX_SIZE with a value of 100.
// NOTE: Define the constant outside the main function
// Your code here
pub const MAX_SIZE: i32 = 100;
pub fn main() -> i32 {
    MAX_SIZE
}

Corwin Dong

taigua

5 hours ago

2.68ms

86.04kb

// Define a constant MAX_SIZE with a value of 100.
// NOTE: Define the constant outside the main function
// Your code here
pub const MAX_SIZE: i32 = 100;
pub fn main() -> i32 {
    MAX_SIZE
}

Esteban Pérez

lep511

7 hours ago

2.91ms

86.04kb

// Define a constant MAX_SIZE with a value of 100.
// NOTE: Define the constant outside the main function
// Your code here
pub const MAX_SIZE: i32 = 100;
pub fn main() -> i32 {
    MAX_SIZE
}

Timothy Z.

kKaskak

10 hours ago

2.61ms

86.04kb

// Define a constant MAX_SIZE with a value of 100.
// NOTE: Define the constant outside the main function
// Your code here
pub const MAX_SIZE: i32 = 100;
pub fn main() -> i32 {
    MAX_SIZE
}

wphan

11 hours ago

6.14ms

86.04kb

// Define a constant MAX_SIZE with a value of 100.
// NOTE: Define the constant outside the main function
// Your code here
pub const MAX_SIZE: i32 = 100;
pub fn main() -> i32 {
    MAX_SIZE
}

Fredo

sakseiw

11 hours ago

3.68ms

86.04kb

// Define a constant MAX_SIZE with a value of 100.
// NOTE: Define the constant outside the main function
// Your code here
pub const MAX_SIZE: i32 = 100;
pub fn main() -> i32 {
    MAX_SIZE
}

cmdrtomalak

12 hours ago

2.54ms

86.04kb

// Define a constant MAX_SIZE with a value of 100.
// NOTE: Define the constant outside the main function
// Your code here
pub const MAX_SIZE: i32 = 100;
pub fn main() -> i32 {
    MAX_SIZE
}

RiyadDz22

12 hours ago

2.76ms

86.04kb

// Define a constant MAX_SIZE with a value of 100.
// NOTE: Define the constant outside the main function
// Your code here
pub const MAX_SIZE: i32 = 100;
pub fn main() -> i32 {
    MAX_SIZE
}

manuelmj

12 hours ago

3.85ms

86.04kb

// Define a constant MAX_SIZE with a value of 100.
// NOTE: Define the constant outside the main function
// Your code here
pub const MAX_SIZE : i32 = 100; 
pub fn main() -> i32 {
    MAX_SIZE
}

prey169

13 hours ago

3.06ms

86.04kb

// Define a constant MAX_SIZE with a value of 100.
// NOTE: Define the constant outside the main function
// Your code here
pub const MAX_SIZE:i32 = 100;
pub fn main() -> i32 {
    MAX_SIZE
}

Eduardo Antuña Díez

eduadiez

13 hours ago

2.55ms

86.04kb

// Define a constant MAX_SIZE with a value of 100.
// NOTE: Define the constant outside the main function
// Your code here
pub const MAX_SIZE: i32 = 100;
pub fn main() -> i32 {
    MAX_SIZE
}

Swarnim Chandve

Swarnim-Chandve

14 hours ago

2.44ms

86.04kb

// Define a constant MAX_SIZE with a value of 100.
// NOTE: Define the constant outside the main function
// Your code here
pub const MAX_SIZE: i32 = 100;
pub fn main() -> i32 {
    return  MAX_SIZE;
}

Sathit Junthong

famesensor

16 hours ago

2.76ms

86.04kb

// Define a constant MAX_SIZE with a value of 100.
// NOTE: Define the constant outside the main function
// Your code here
pub const MAX_SIZE:i32 = 100;
pub fn main() -> i32 {
    MAX_SIZE
}

Patrick Yu

PatrickYu17

16 hours ago

2.71ms

86.04kb

// Define a constant MAX_SIZE with a value of 100.
// NOTE: Define the constant outside the main function
// Your code here
pub const MAX_SIZE : i32 = 100;
pub fn main() -> i32 {
    MAX_SIZE
}

5ch3m45

16 hours ago

2.75ms

86.04kb

// Define a constant MAX_SIZE with a value of 100.
// NOTE: Define the constant outside the main function
// Your code here
pub const MAX_SIZE: i32 = 100;
pub fn main() -> i32 {
    MAX_SIZE
}

christianbaumberger

16 hours ago

2.80ms

86.04kb

// Define a constant MAX_SIZE with a value of 100.
// NOTE: Define the constant outside the main function
// Your code here
pub const MAX_SIZE: i32 = 100;
pub fn main() -> i32 {
    MAX_SIZE
}

Matthew Taylor

mt1379

17 hours ago

2.56ms

86.04kb

// Define a constant MAX_SIZE with a value of 100.
// NOTE: Define the constant outside the main function
// Your code here
pub const MAX_SIZE: i32 = 100;
pub fn main() -> i32 {
    MAX_SIZE
}

Tanmay Kulkarni

tanmay-kulkarni

18 hours ago

2.66ms

86.04kb

// Define a constant MAX_SIZE with a value of 100.
// NOTE: Define the constant outside the main function
// Your code here
pub const MAX_SIZE: i32 = 100;
pub fn main() -> i32 {
    MAX_SIZE
}

nori

kikakugai

18 hours ago

2.66ms

86.04kb

// Define a constant MAX_SIZE with a value of 100.
// NOTE: Define the constant outside the main function
// Your code here
pub const MAX_SIZE: i32 = 100;
pub fn main() -> i32 {
    return MAX_SIZE;
}

Nikita Smirnov

Nismirno

20 hours ago

2.34ms

86.04kb

// Define a constant MAX_SIZE with a value of 100.
// NOTE: Define the constant outside the main function
// Your code here
pub const MAX_SIZE: i32 = 100;
pub fn main() -> i32 {
    MAX_SIZE
}

chuyuanlinzi

a day ago

2.43ms

86.04kb

// Define a constant MAX_SIZE with a value of 100.
// NOTE: Define the constant outside the main function
// Your code here
pub const MAX_SIZE:i32 = 100;
pub fn main() -> i32 {
    MAX_SIZE
}

Nyakio Maina

nyakiomaina

a day ago

2.59ms

86.04kb

// Define a constant MAX_SIZE with a value of 100.
pub const MAX_SIZE: i32 = 100;
// NOTE: Define the constant outside the main function
// Your code here
pub fn main() -> i32 {
    MAX_SIZE
}

Nino Marrazzo

iliych91

a day ago

2.43ms

86.04kb

// Define a constant MAX_SIZE with a value of 100.
// NOTE: Define the constant outside the main function
// Your code here
pub const MAX_SIZE: i32 = 100;
pub fn main() -> i32 {
    MAX_SIZE
}

Matis CAFFIAUX

M4ti5

a day ago

3.44ms

86.04kb

// Define a constant MAX_SIZE with a value of 100.
// NOTE: Define the constant outside the main function
// Your code here
pub const MAX_SIZE :i32= 100;
pub fn main() -> i32 {
 MAX_SIZE 
}

Matis CAFFIAUX

M4ti5

a day ago

2.75ms

86.04kb

// Define a constant MAX_SIZE with a value of 100.
// NOTE: Define the constant outside the main function
// Your code here
pub const MAX_SIZE :i32= 100;
pub fn main() -> i32 {
 MAX_SIZE 
}

Toshikazu Fukushima

fukushima-toshi-exnoa

a day ago

2.74ms

86.04kb

// Define a constant MAX_SIZE with a value of 100.
// NOTE: Define the constant outside the main function
// Your code here
pub const MAX_SIZE: i32 = 100;
pub fn main() -> i32 {
    MAX_SIZE
}

エヴァンゲリオン

Lu-zihang

a day ago

3.94ms

86.04kb

// Define a constant MAX_SIZE with a value of 100.
// NOTE: Define the constant outside the main function
// Your code here
pub const MAX_SIZE: i32 = 100;
pub fn main() -> i32 {
    MAX_SIZE
}

c4e

c4ebt

a day ago

2.86ms

86.04kb

// Define a constant MAX_SIZE with a value of 100.
// NOTE: Define the constant outside the main function
// Your code here
pub const MAX_SIZE: i32 = 100;
pub fn main() -> i32 {
    MAX_SIZE    
}

Andrew Thomas

ch00kz

a day ago

2.83ms

86.04kb

// Define a constant MAX_SIZE with a value of 100.
// NOTE: Define the constant outside the main function
// Your code here
pub const MAX_SIZE: i32 = 100;
pub fn main() -> i32 {
    MAX_SIZE
}

Douglas Campbell

CampbellD84

a day ago

8.08ms

86.04kb

// Define a constant MAX_SIZE with a value of 100.
// NOTE: Define the constant outside the main function
// Your code here
pub const MAX_SIZE : i32 = 100;
pub fn main() -> i32 {
    MAX_SIZE
}

Taufik Hidayat

tfkhdyt

a day ago

3.04ms

86.04kb

// Define a constant MAX_SIZE with a value of 100.
// NOTE: Define the constant outside the main function
// Your code here
pub const MAX_SIZE: i32 = 100;
pub fn main() -> i32 {
    MAX_SIZE
}

krumbthi

Krumbthi

a day ago

2.65ms

86.04kb

// Define a constant MAX_SIZE with a value of 100.
// NOTE: Define the constant outside the main function
// Your code here
pub const MAX_SIZE: i32 = 100;
pub fn main() -> i32 {
    MAX_SIZE
}

Sobornost

sobornostea

a day ago

3.07ms

86.04kb

// Define a constant MAX_SIZE with a value of 100.
// NOTE: Define the constant outside the main function
// Your code here
pub const MAX_SIZE: i32 = 100;
pub fn main() -> i32 {
    MAX_SIZE
}

Levent Can Yılmaz

lvntcnylmz

a day ago

2.60ms

86.04kb

// Define a constant MAX_SIZE with a value of 100.
// NOTE: Define the constant outside the main function
// Your code here
pub const MAX_SIZE:i32 = 100;
pub fn main() -> i32 {
    MAX_SIZE
}

André Decher

Wolfy7

2 days ago

2.96ms

86.04kb

// Define a constant MAX_SIZE with a value of 100.
// NOTE: Define the constant outside the main function
// Your code here
pub const MAX_SIZE: i32 = 100;
pub fn main() -> i32 {
    MAX_SIZE
}

Paul Pavlov

ppavlovdev

2 days ago

3.12ms

86.04kb

// Define a constant MAX_SIZE with a value of 100.
// NOTE: Define the constant outside the main function
// Your code here
pub const MAX_SIZE: i32 = 100;
pub fn main() -> i32 {
    MAX_SIZE
}

Manu

wirew0lf

2 days ago

2.74ms

86.04kb

// Define a constant MAX_SIZE with a value of 100.
// NOTE: Define the constant outside the main function
// Your code here
pub const MAX_SIZE: i32 = 100i32;
pub fn main() -> i32 {
    MAX_SIZE
}

Ruud Erie

ruuderie

2 days ago

10.25ms

85.92kb

// Define a constant MAX_SIZE with a value of 100.
// NOTE: Define the constant outside the main function
// Your code here
pub const MAX_SIZE:i32 = 100;
pub fn main() -> i32 {
    MAX_SIZE
}

Danny Burnett

danjambur

2 days ago

4.47ms

86.04kb

// Define a constant MAX_SIZE with a value of 100.
// NOTE: Define the constant outside the main function
// Your code here
pub const MAX_SIZE: i32 = 100;
pub fn main() -> i32 {
    MAX_SIZE
}

Sahaj Ramachandran

SahajR

2 days ago

2.69ms

86.04kb

// Define a constant MAX_SIZE with a value of 100.
// NOTE: Define the constant outside the main function
// Your code here
pub const MAX_SIZE: i32 = 100;
pub fn main() -> i32 {
    MAX_SIZE
}

Matt Simpson

msmps

2 days ago

2.99ms

86.04kb

pub const MAX_SIZE: i32 = 100;
pub fn main() -> i32 {
    MAX_SIZE
}

Marc Delvaux

mdelvaux

2 days ago

2.61ms

86.04kb

// Define a constant MAX_SIZE with a value of 100.
// NOTE: Define the constant outside the main function
// Your code here
pub const MAX_SIZE: i32 = 100;
pub fn main() -> i32 {
    MAX_SIZE
}

Donald Huber-Youmans

dHuberYoumans

2 days ago

2.75ms

86.04kb

// Define a constant MAX_SIZE with a value of 100.
// NOTE: Define the constant outside the main function
// Your code here
pub const MAX_SIZE: i32 = 100;
pub fn main() -> i32 {
    MAX_SIZE
}

buu

bushuai

2 days ago

2.67ms

86.04kb

// Define a constant MAX_SIZE with a value of 100.
// NOTE: Define the constant outside the main function
// Your code here
pub const MAX_SIZE:i32 = 100;
pub fn main() -> i32 {
    return MAX_SIZE;
}

Beimodin

2 days ago

2.90ms

86.04kb

// Define a constant MAX_SIZE with a value of 100.
// NOTE: Define the constant outside the main function
// Your code here
pub const MAX_SIZE: i32 = 100;
pub fn main() -> i32 {
    MAX_SIZE
}

Julien

jualexandre

2 days ago

2.67ms

86.04kb

// Define a constant MAX_SIZE with a value of 100.
// NOTE: Define the constant outside the main function
// Your code here
pub const MAX_SIZE: i32 = 100;
pub fn main() -> i32 {
    MAX_SIZE
}

Uzair.dev

UzairRehman4

2 days ago

2.91ms

86.04kb

// Define a constant MAX_SIZE with a value of 100.
    pub const MAX_SIZE:i32 = 100;
// NOTE: Define the constant outside the main function
// Your code here
pub fn main() -> i32 {
    MAX_SIZE
}

Elliott Draper

ejdraper

2 days ago

3.93ms

86.04kb

// Define a constant MAX_SIZE with a value of 100.
// NOTE: Define the constant outside the main function
// Your code here
pub const MAX_SIZE: i32 = 100;
pub fn main() -> i32 {
    return MAX_SIZE;
}