go语言怎么遍历字符串

在Go语言中，可以使用range关键字来遍历字符串。下面是一个简单的例子：

package main

import (
	"fmt"
)

func main() {
	str := "Hello, World!"

	for index, char := range str {
		fmt.Printf("Character at index %d is %c\n", index, char)
	}
}

在上面的例子中，我们使用range关键字遍历字符串str，并输出每个字符的索引和字符本身。输出结果为：

Character at index 0 is H
Character at index 1 is e
Character at index 2 is l
Character at index 3 is l
Character at index 4 is o
Character at index 5 is ,
Character at index 6 is  
Character at index 7 is W
Character at index 8 is o
Character at index 9 is r
Character at index 10 is l
Character at index 11 is d
Character at index 12 is !