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How to Declare an Array in Rust - Step by Step Examples

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How to Declare an Array in Rust ?

Answer

In Rust, you declare an array using square brackets and optionally specify the type and size.

✐ Examples

1 Declare an Array in Rust

In this example,

We declare an array named numbers of type i32 and size 5.
We initialize the array with some values.
We print the array elements to the console.

Rust Program

fn main() {
    let numbers: [i32; 5] = [1, 2, 3, 4, 5];
    println!("{:?}", numbers);
}

Output

[1, 2, 3, 4, 5]

2 Declare an Array of Characters

In this example,

We declare an array named chars of type char and size 6.
We initialize the array with some characters.
We print the array elements to the console.

Rust Program

fn main() {
    let chars: [char; 6] = ['a', 'b', 'c', 'd', 'e', '\0'];
    println!("{:?}", chars);
}

Output

[a, b, c, d, e, \u{0}]

Summary

In this tutorial, we learned How to Declare an Array in Rust language with well detailed examples.

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