Question

i := 123
s := string(i) 

s is ‘E’, but what I want is “123”

Please tell me how can I get “123”.

And in Java, I can do in this way:

String s = "ab" + "c"  // s is "abc"

how can I concat two strings in Go?

Answer 1

Use the strconv package’s Itoa function.

For example:

package main

import (
    "strconv"
    "fmt"
)

func main() {
    t := strconv.Itoa(123)
    fmt.Println(t)
}

You can concat strings simply by +‘ing them, or by using the Join function of the strings package.