Loops for

Context

Go has only one looping construct: for. It can be used in three main forms:

1. Classic: for initialization; condition; post {}
2. While‑like: for condition {}
3. Infinite: for {} (break with break or return)

Example

Print numbers from 0 to 4, then a while‑like loop, then an infinite loop with break.

Code example

package main

import "fmt"

func main() {
    // Classic loop
    for i := 0; i < 5; i++ {
        fmt.Print(i, " ")
    }
    fmt.Println()

    // While-like
    j := 0
    for j < 3 {
        fmt.Print(j, " ")
        j++
    }
    fmt.Println()

    // Infinite loop
    k := 0
    for {
        if k >= 2 {
            break
        }
        fmt.Print(k, " ")
        k++
    }
    fmt.Println()
}

Output

0 1 2 3 4
0 1 2
0 1

Useful links

• Go spec: For statements
• Go by Example: For