Primitive Data Types

Rust is a statically-typed language, which means that every variable must have a specific type. Rust's type system is designed to be safe and to prevent many common errors that occur in other languages. In this challenge, you will learn about some of the basic primitive data types in Rust, such as integers, floating-point numbers, booleans, and characters.

Understanding how to declare and use these basic data types is fundamental to writing effective Rust code. This challenge will guide you through defining variables with specific types and initializing them.

Your task

Define variable x with type u8
Define variable y with type f64
Define variable z with type bool
Define variable a with type char

Each of these variables should be annotated with their respective types and initialized with specific values of your choice.

Requirements

Every variable must be annotated with its type.
Initialize each variable with any value of your choice of the correct type.

Explanation of Data Types

Integer (u8): Represents an 8-bit unsigned integer.
Floating-point number (f64): Represents a 64-bit floating-point number.
Boolean (bool): Represents a boolean value, which can be either true or false.
Character (char): Represents a single Unicode scalar value.

Hints

Use the let keyword to define a variable.
Annotate the variable's type by specifying let variable_name: type = .

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Solutions

Nicolay Gerold

nicolaygerold

12 minutes ago

3.35ms

88.19kb

pub fn data_types() {
    // 1. Define variable `x` of type `u8`
    let x : u8 = 8;
    // 2. Define variable `y` of type `f64`
    let y : f64 = 0.2;
    // 3. Define variable `z` of type `bool`
    let z : bool = true;
    // 4. Define variable `a` of type `char`
    let a : char = 'a';
}

sander-b-postnl

23 minutes ago

3.53ms

88.20kb

pub fn data_types() {
    // 1. Define variable `x` of type `u8`
    let x: u8 = 0xff;
    // 2. Define variable `y` of type `f64`
    let y: f64 = 24.02;
    // 3. Define variable `z` of type `bool`
    let z: bool = false;
    // 4. Define variable `a` of type `char`
    let a: char = 'a';
}

Adam Baker

nordicmachine

30 minutes ago

3.47ms

88.19kb

pub fn data_types() {
    // 1. Define variable `x` of type `u8`
    let x: u8 = 25;
    // 2. Define variable `y` of type `f64`
    let y: f64 = 2.58;
    // 3. Define variable `z` of type `bool`
    let z: bool = true;
    // 4. Define variable `a` of type `char`
    let a: char = 'A';
}

Kai

codecrack3

38 minutes ago

3.85ms

88.19kb

pub fn data_types() {
    // 1. Define variable `x` of type `u8`
    // 2. Define variable `y` of type `f64`
    // 3. Define variable `z` of type `bool`
    // 4. Define variable `a` of type `char`
    let x: u8 = 1;
    let y: f64 = 0.64;
    let z: bool = true;
    let a: char = 'c';
}

Dmytro Hubskyi

Mitrodan

2 hours ago

3.37ms

87.32kb

pub fn data_types() {
    // 1. Define variable `x` of type `u8`
    let x: u8;
    // 2. Define variable `y` of type `f64`
    let y: f64;
    // 3. Define variable `z` of type `bool`
    let z: bool;
    // 4. Define variable `a` of type `char`
    let a: char;
}

Kevin Wolny

rot11

4 hours ago

3.51ms

87.32kb

pub fn data_types() {
    // 1. Define variable `x` of type `u8`
    let x: u8;
    let y: f64;
    let z: bool;
    let a: char;
    // 2. Define variable `y` of type `f64`
    // 3. Define variable `z` of type `bool`
    // 4. Define variable `a` of type `char`
}

Hendrik De Vloed

hendrikdevloed

4 hours ago

3.48ms

88.19kb

pub fn data_types() {
    // 1. Define variable `x` of type `u8`
    let x : u8 = 1;
    // 2. Define variable `y` of type `f64`
    let y : f64 = 1f64;
    // 3. Define variable `z` of type `bool`
    let z : bool = true;
    // 4. Define variable `a` of type `char`
    let a : char = 'a';
}

amassare

4 hours ago

3.61ms

88.20kb

pub fn data_types() {
    // 1. Define variable `x` of type `u8`
    // 2. Define variable `y` of type `f64`
    // 3. Define variable `z` of type `bool`
    // 4. Define variable `a` of type `char`
    let x:u8=0u8;
    let y:f64=0.0f64;
    let z:bool=true;
    let a:char='a';
}

yar999

5 hours ago

3.35ms

88.19kb

pub fn data_types() {
    // 1. Define variable `x` of type `u8`
    let x: u8 = 1;
    // 2. Define variable `y` of type `f64`
    let y: f64 = 1.1;
    // 3. Define variable `z` of type `bool`
    let z: bool = true;
    // 4. Define variable `a` of type `char`
    let a: char = '1';
}

Matei Stefanescu

matei

6 hours ago

3.62ms

88.19kb

pub fn data_types() {
    // 1. Define variable `x` of type `u8`
    let x: u8 = 1;
    // 2. Define variable `y` of type `f64`
    let y: f64 = 2.0;
    // 3. Define variable `z` of type `bool`
    let z: bool = true;
    // 4. Define variable `a` of type `char`
    let a: char = 'a';
}

Zava

zavakid

6 hours ago

3.67ms

88.19kb

pub fn data_types() {
    // 1. Define variable `x` of type `u8`
    let x : u8 = 42;
    // 2. Define variable `y` of type `f64`
    let y : f64 = 42.0;
    // 3. Define variable `z` of type `bool`
    let z : bool = true;
    // 4. Define variable `a` of type `char`
    let a: char = 'a';
}

Johnchoi913

10 hours ago

3.39ms

87.32kb

pub fn data_types() {
    // 1. Define variable `x` of type `u8`
    // 2. Define variable `y` of type `f64`
    // 3. Define variable `z` of type `bool`
    // 4. Define variable `a` of type `char`
    let x: u8;
    let y: f64;
    let z: bool;
    let a: char;
}

Johnchoi913

10 hours ago

3.24ms

87.32kb

pub fn data_types() {
    // 1. Define variable `x` of type `u8`
    // 2. Define variable `y` of type `f64`
    // 3. Define variable `z` of type `bool`
    // 4. Define variable `a` of type `char`
    let x: u8;
    let y: f64;
    let z: bool;
    let a: char;
}

Parallaxes

14 hours ago

3.43ms

87.32kb

pub fn data_types() {
    // 1. Define variable `x` of type `u8`
    let x: u8;
    // 2. Define variable `y` of type `f64`
    let y: f64;
    // 3. Define variable `z` of type `bool`
    let z: bool;
    // 4. Define variable `a` of type `char`
    let a: char;
}

Elliott Smith

brum-b0

14 hours ago

3.35ms

88.19kb

pub fn data_types() {
    // 1. Define variable `x` of type `u8`
    let x :u8 = 1;
    // 2. Define variable `y` of type `f64`
    let y :f64 = 1.0;
    // 3. Define variable `z` of type `bool`
    let z :bool = true;
    // 4. Define variable `a` of type `char`
    let a :char = 'a';
}

Moses

MosesMp3

16 hours ago

3.53ms

88.19kb

pub fn data_types() {
    // 1. Define variable `x` of type `u8`
    let x:u8  = 10; 
    // 2. Define variable `y` of type `f64`
    let y:f64 = 10.00; 
    // 3. Define variable `z` of type `bool`
    let z:bool = true;
    // 4. Define variable `a` of type `char`
    let a:char = 'a'; 
}

i5.650

i5-650

18 hours ago

3.26ms

88.19kb

pub fn data_types() {
    // 1. Define variable `x` of type `u8`
    let x: u8 = 1;
    // 2. Define variable `y` of type `f64`
    let y: f64 = 3.14;
    // 3. Define variable `z` of type `bool`
    let z: bool = false;
    // 4. Define variable `a` of type `char`
    let a:char = 'a';
}

Harry Hornbacher

hhornbacher

20 hours ago

3.46ms

88.19kb

pub fn data_types() {
    // 1. Define variable `x` of type `u8`
    let x: u8 = 1;
    // 2. Define variable `y` of type `f64`
    let y: f64 = 2.0;
    // 3. Define variable `z` of type `bool`
    let z: bool = false;
    
    // 4. Define variable `a` of type `char`
    let a: char = 'D';
}

ogaca42

20 hours ago

3.44ms

88.19kb

pub fn data_types() {
    // 1. Define variable `x` of type `u8`
    let x: u8 = 0;
    let y:f64 = 0_f64;
    let z:bool = false;
    let a:char = 'a';
    // 2. Define variable `y` of type `f64`
    // 3. Define variable `z` of type `bool`
    // 4. Define variable `a` of type `char`
}

bensmith83

a day ago

3.60ms

88.19kb

pub fn data_types() {
    // 1. Define variable `x` of type `u8`
    let x : u8 = 1;
    // 2. Define variable `y` of type `f64`
    let y : f64 = 2.22222;
    // 3. Define variable `z` of type `bool`
    let z : bool = true;
    // 4. Define variable `a` of type `char`
    let a : char = 'a';
}

Ustin

a day ago

3.81ms

88.19kb

pub fn data_types() {
    // 1. Define variable `x` of type `u8`
    let x : u8 = 1;
    // 2. Define variable `y` of type `f64`
    let y : f64 = 2.0;
    // 3. Define variable `z` of type `bool`
    let z : bool = true;
    // 4. Define variable `a` of type `char`
    let a : char = 'a';
}

Joseph Brewer

jdbrew2

a day ago

3.32ms

88.19kb

pub fn data_types() {
    // 1. Define variable `x` of type `u8`
    let x: u8 = 5;
    // 2. Define variable `y` of type `f64`
    let y: f64 = 25.9;
    // 3. Define variable `z` of type `bool`
    let z: bool = true;
    // 4. Define variable `a` of type `char`
    let a: char = 'z';
}

Patrik Bjärterot

pbjarterot

a day ago

3.33ms

87.32kb

pub fn data_types() {
    // 1. Define variable `x` of type `u8`
    let x: u8;
    // 2. Define variable `y` of type `f64`
    let y: f64;
    // 3. Define variable `z` of type `bool`
    let z: bool;
    // 4. Define variable `a` of type `char`
    let a: char;
}

Ayush Rawat

ayushrawat10

a day ago

3.47ms

88.20kb

pub fn data_types() {
    // 1. Define variable `x` of type `u8`
    let x: u8 = 4;
    // 2. Define variable `y` of type `f64`
    let y: f64 = 1888888.8;
    // 3. Define variable `z` of type `bool`
    let z: bool = true;
    // 4. Define variable `a` of type `char`
    let a: char = 'h';
}

retinotopic

a day ago

3.67ms

88.20kb

pub fn data_types() {
    // 1. Define variable `x` of type `u8`
    let x: u8 = 254;
    // 2. Define variable `y` of type `f64`
    let y: f64 = 199.123;
    // 3. Define variable `z` of type `bool`
    let z: bool = false;
    // 4. Define variable `a` of type `char`
    let a: char = 'a';
}

Cédric

AsymetricData

a day ago

3.39ms

87.32kb

pub fn data_types() {
    // 1. Define variable `x` of type `u8`
    let x: u8;
    // 2. Define variable `y` of type `f64`
    let y: f64;
    // 3. Define variable `z` of type `bool`
    let z: bool;
    // 4. Define variable `a` of type `char`
    let a: char;
}

Jonathan Lopez

otherJL0

a day ago

3.37ms

89.88kb

pub fn data_types() {
    let x: u8 = 42;
    let y: f64 = 3.14;
    let z: bool = true;
    let a: char = 'R';
    println!("{x}{y}{z}{a}")
}

Smit Barve

l3vith

a day ago

3.46ms

88.19kb

pub fn data_types() {
    // 1. Define variable `x` of type `u8`
    // 2. Define variable `y` of type `f64`
    // 3. Define variable `z` of type `bool`
    // 4. Define variable `a` of type `char`
    let x: u8 = 10;
    let y: f64 = 333.33;
    let z: bool = true;
    let a: char = 'a';
}

Stefano Cianciulli

CianciuStyles

a day ago

3.73ms

88.19kb

pub fn data_types() {
    // 1. Define variable `x` of type `u8`
    let x: u8 = 1;
    // 2. Define variable `y` of type `f64`
    let y: f64 = 1.0;
    // 3. Define variable `z` of type `bool`
    let z: bool = true;
    // 4. Define variable `a` of type `char`
    let a: char = 'a';
}

atonminion

a day ago

3.50ms

87.32kb

pub fn data_types() {
    // 1. Define variable `x` of type `u8`
    let x:u8; 
    // 2. Define variable `y` of type `f64`
    let y:f64;
    // 3. Define variable `z` of type `bool`
    let z:bool;
    // 4. Define variable `a` of type `char`
    let a:char;
}

damascussteel21

a day ago

3.36ms

87.32kb

pub fn data_types() {
    // 1. Define variable `x` of type `u8`
    let x: u8;
    // 2. Define variable `y` of type `f64`
    let y: f64;
    // 3. Define variable `z` of type `bool`
    let z: bool;
    // 4. Define variable `a` of type `char`
    let a: char;
}

jacob kili

solebox

a day ago

3.54ms

87.32kb

pub fn data_types() {
    // 1. Define variable `x` of type `u8`
    let x: u8;
    // 2. Define variable `y` of type `f64`
    let y: f64;
    // 3. Define variable `z` of type `bool`
    let z: bool;
    // 4. Define variable `a` of type `char`
    let a: char;
}

daanbouwman19

a day ago

3.47ms

87.32kb

pub fn data_types() {
    // 1. Define variable `x` of type `u8`
    let x: u8;
    // 2. Define variable `y` of type `f64`
    let y: f64;
    // 3. Define variable `z` of type `bool`
    let z: bool;
    // 4. Define variable `a` of type `char`
    let a: char;
}

Marco Schanz

fuuman

a day ago

3.35ms

88.19kb

pub fn data_types() {
    // 1. Define variable `x` of type `u8`
    let x :u8 = 1;
    // 2. Define variable `y` of type `f64`
    let y :f64 = 2.5;
    // 3. Define variable `z` of type `bool`
    let z :bool = true;
    // 4. Define variable `a` of type `char`
    let a :char = 'x';
}

Egor Konovalov

agegorin

a day ago

3.36ms

87.32kb

pub fn data_types() {
    // 1. Define variable `x` of type `u8`
    let x: u8;
    // 2. Define variable `y` of type `f64`
    let y: f64;
    // 3. Define variable `z` of type `bool`
    let z: bool;
    // 4. Define variable `a` of type `char`
    let a: char;
}

Araden14

a day ago

3.52ms

88.20kb

pub fn data_types() {
    // 1. Define variable `x` of type `u8`
    let x : u8 = 255;
    // 2. Define variable `y` of type `f64`
    let y : f64 = 3.22209;
    // 3. Define variable `z` of type `bool`
    let z : bool = true;
    // 4. Define variable `a` of type `char`
    let a : char = '1';
}

Oleksandr Romanov

alexromanov

a day ago

3.54ms

88.19kb

pub fn data_types() {
    // 1. Define variable `x` of type `u8`
    let x: u8 = 0;
    // 2. Define variable `y` of type `f64`
    let y: f64 = 2.3;
    // 3. Define variable `z` of type `bool`
    let z: bool = true;
    // 4. Define variable `a` of type `char`
    let a: char = 'a';
}

Szymon Bęczkowski

owiecc

a day ago

3.49ms

88.19kb

pub fn data_types() {
    // 1. Define variable `x` of type `u8`
    let x: u8 = 2;
    // 2. Define variable `y` of type `f64`
    let y: f64 = 23.3;
    // 3. Define variable `z` of type `bool`
    let z: bool = true;
    // 4. Define variable `a` of type `char`
    let a: char = '2';
}

viktr

victorchukwuemeka

a day ago

3.35ms

87.32kb

pub fn data_types() {
    // 1. Define variable `x` of type `u8`
    // 2. Define variable `y` of type `f64`
    // 3. Define variable `z` of type `bool`
    // 4. Define variable `a` of type `char`
    let x: u8;
    let y: f64;
    let z: bool;
    let a:char ;
}

SP. Siddharth

Siddev09

a day ago

3.31ms

87.32kb

pub fn data_types() {
    // 1. Define variable `x` of type `u8`
    let x : u8;
    // 2. Define variable `y` of type `f64`
    let y : f64;
    // 3. Define variable `z` of type `bool`
    let z : bool ;
    // 4. Define variable `a` of type `char`
    let a : char;
}

Timepatterns

a day ago

3.34ms

87.32kb

pub fn data_types() {
    // 1. Define variable `x` of type `u8`
    let x: u8;
    // 2. Define variable `y` of type `f64`
    let y: f64;
    // 3. Define variable `z` of type `bool`
    let z: bool;
    // 4. Define variable `a` of type `char`
    let a: char;
}

avgolcz

a day ago

3.45ms

88.19kb

pub fn data_types() {
    // 1. Define variable `x` of type `u8`
    let x : u8= 0;
    // 2. Define variable `y` of type `f64`
    let y : f64 = 0.0;
    // 3. Define variable `z` of type `bool`
    let z : bool = true;
    // 4. Define variable `a` of type `char`
    let a : char = 'a';
}

Shubham Raizada

shbhmrzd

2 days ago

3.95ms

88.19kb

pub fn data_types() {
    // 1. Define variable `x` of type `u8`
    let x:u8 = 1;
    // 2. Define variable `y` of type `f64`
    let y:f64 = 1.1;
    // 3. Define variable `z` of type `bool`
    let z:bool = true;
    // 4. Define variable `a` of type `char`
    let a:char = 'a';
}

dev-puzzler

2 days ago

3.57ms

88.20kb

pub fn data_types() {
    // 1. Define variable `x` of type `u8`
    let x:u8 = 0_u8;
    // 2. Define variable `y` of type `f64`
    let y:f64 = 1.0_f64;
    // 3. Define variable `z` of type `bool`
    let z:bool = false;
    // 4. Define variable `a` of type `char`
    let a:char = 'a';
}

FabricioRubo

2 days ago

3.55ms

87.32kb

pub fn data_types() {
    // 1. Define variable `x` of type `u8`
    let x:u8;
    // 2. Define variable `y` of type `f64`
    let y:f64;
    // 3. Define variable `z` of type `bool`
    let z:bool;
    // 4. Define variable `a` of type `char`
    let a:char;
}

Tim Sekiguchi

tsekiguchi

2 days ago

3.11ms

87.32kb

pub fn data_types() {
    // 1. Define variable `x` of type `u8`
    let x: u8;
    // 2. Define variable `y` of type `f64`
    let y: f64;
    // 3. Define variable `z` of type `bool`
    let z: bool;
    // 4. Define variable `a` of type `char`
    let a: char;
    
}

Ojash Neopane

oneopane

2 days ago

3.66ms

88.19kb

pub fn data_types() {
    // 1. Define variable `x` of type `u8`
    // 2. Define variable `y` of type `f64`
    // 3. Define variable `z` of type `bool`
    // 4. Define variable `a` of type `char`
    let x: u8 = 5;
    let y: f64 = 3.1;
    let z: bool = true;
    let a: char = 'a';
}

Ross Kehoe

notpractical

2 days ago

3.34ms

87.32kb

pub fn data_types() {
    // 1. Define variable `x` of type `u8`
let x:u8;
    // 2. Define variable `y` of type `f64`
let y:f64;
    // 3. Define variable `z` of type `bool`
let z:bool;
    // 4. Define variable `a` of type `char`
let a:char;
}

Sebastian Heinz

IamSebastianDev

2 days ago

3.31ms

88.19kb

pub fn data_types() {
    // 1. Define variable `x` of type `u8`
    let x: u8 = 1;
    // 2. Define variable `y` of type `f64`
    let y: f64 = 3.1415;
    // 3. Define variable `z` of type `bool`
    let z: bool = true;
    // 4. Define variable `a` of type `char`
    let a: char = 'a';
}

Pascal Dietrich

Cameo007

2 days ago

3.42ms

88.19kb

pub fn data_types() {
    // 1. Define variable `x` of type `u8`
    let x: u8 = 3;
    // 2. Define variable `y` of type `f64`
    let y: f64 = 3.14;
    // 3. Define variable `z` of type `bool`
    let z: bool = true;
    // 4. Define variable `a` of type `char`
    let a: char = 'a';
}