Arrays

Context

An array is a fixed‑size sequence of elements of a single type. The size is part of the type (e.g., [5]int). Arrays are value types – assigning copies the entire array.

Example

Declare, initialize, and iterate over arrays.

Code example

package main

import "fmt"

func main() {
    var a [3]int                 // zero-valued array [0,0,0]
    b := [4]int{1, 2, 3, 4}      // literal
    c := [...]int{10, 20, 30}    // size inferred

    a[0] = 42
    fmt.Println(a, b, c)

    // Iterate
    for i, v := range c {
        fmt.Printf("c[%d] = %d\n", i, v)
    }
}

Output

[42 0 0] [1 2 3 4] [10 20 30]
c[0] = 10
c[1] = 20
c[2] = 30

Useful links

• Go spec: Array types
• Go by Example: Arrays