Append int value to string

Question

I can't seem to find a working solution: The situation is the following:

var s string
n := 1

I want to append the int value to the string s. Then increment or decrement n at some point and append the new value again

So in the end I'd have a string like this:

1213

What I tried so far:

s = s + string(rune(n)) // for some reason string(rune(n) is [] aka empty

Answer 1

You can use strconv from the strconv package

package main

import (
    "fmt"
    "strconv"
)

func main() {
    a := 4 
    b := 3
    c := "1"

    fmt.Println(c + strconv.Itoa(a) + strconv.Itoa(b))
}

Or you can use Sprintf from the fmt package:

package main

import (
    "fmt"
)

func main() {
    a := 4 
    b := 3
    c := "1"
    c = fmt.Sprintf("%s%d%d",c,a,b)

    fmt.Println(c + strconv.Itoa(a) + strconv.Itoa(b))
}