hello every body i was thinking about if i want index one number in golang how can i do it for example i have a var with name num that equal 123 and i want say pick first number in this variable and give me 1 and i say oh i can make it to string and then index and after that becomes my index to number

package main

import (
    "fmt"
)

func main() {

    num := 123
    z := string(num)[0]
    x := int(z)
    fmt.Println(x)
}

i expect to see number 1 but i dont know how to without use “for” or any thing becomes my number to index