如何在Go中逐个遍历一对字符串呢？

package main

import "fmt"

func main() {
    str1 := "Hello"
    str2 := "World"

    for i, char := range str1 {
        fmt.Printf("str1[%d] = %c\n", i, char)
    }

    for i, char := range str2 {
        fmt.Printf("str2[%d] = %c\n", i, char)
    }
}

str1[0] = H
str1[1] = e
str1[2] = l
str1[3] = l
str1[4] = o
str2[0] = W
str2[1] = o
str2[2] = r
str2[3] = l
str2[4] = d