Overview

• Hex numbers are base 16

• Octal numbers are base 8

Hex Numbers

Hex numbers can be written using prefix 0x or 0X in GO. When Go sees any number starting with 0x or 0X, it treats it as a hexadecimal number. In the below example, we added  0x14 in hexadecimal to number 10. 0x14 in hexadecimal is equal to 20 in decimal. Therefore the output will be 30. See conversion table – https://ascii.cl/conversion.htm

package main

import "fmt"

func main() {
    hexa20 := 0x14 //Equivalent to 20 in decimal
    output := 10 + hexa20
    fmt.Println(output)
}

Output:

30

Octal Numbers

Octal numbers can be written using prefix 0 in Go. When Go sees any number starting with 0, it treats it as a octal number. In the below example, we added  024 in octal to 10. 024 in octal is equal to 20 in decimal. Therefore the output will be 30

package main

import "fmt"

func main() {
    octa20 := 024 //Equivalent to 20 in decimal
    output := 10 + octa20
    fmt.Println(output)
}

Output:

30

Combined Example of Octal and Hex

In the below example, 0x14 in hexa is added to 024 in octa and 10. 0x14 in hexa is equal to 20 in decimal. 024 in octal is equal to 20 in decimal. Therefore the output is 50

package main

import "fmt"

func main() {
    hexa20 := 0x14 //Equivalent to 20 in decimal
    
    octa20 := 024 //Equivalent to 20 in decimal
    
    output := 10 + hexa20 + octa20
    fmt.Println(output)
}

Output:

50