Question

How to initialize and print a byte array in Go

Answer 1

package main

import "fmt"

func main() {
    byteArray := []byte{1, 2, 3, 4, 5}
    
    fmt.Println(byteArray)
}



/*
run:

[1 2 3 4 5]

*/

 

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Answer 2

package main

import "fmt"

func main() {
    byteArray := make([]byte, 5) // 5 elements, all initialized to 0
    
    fmt.Println(byteArray)
}



/*
run:

[0 0 0 0 0]

*/

 

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Answer 3

package main

import "fmt"

func main() {
    byteArray := make([]byte, 5)
    
    for i := range byteArray {
        byteArray[i] = 18 // Set each element to 18
    }
    
    fmt.Println(byteArray)
}




/*
run:

[18 18 18 18 18]

*/

 

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