字符串统计

题目：输入一行字符，分别统计出其中英文字母、空格、数字和其它字符的个数。 

package main

import (

    "fmt"

    "os"

)

func main() {

    var charnum, intnum, spacenum, othernum int

    for _, char := range os.Args[1] {

        if char >= '0' && char <= '9' {

            intnum++

        } else if (char >= 'A' && char <= 'Z') || (char >= 'a' && char <= 'z') {

            charnum++

        } else if char == ' ' {

            spacenum++

        } else {

            othernum++

        }

    }

    fmt.Printf("字符串中英文字母的个数为%d\n", charnum)

    fmt.Printf("字符串中数字的个数为%d\n", intnum)

    fmt.Printf("字符串中空格的个数为%d\n", spacenum)

    fmt.Printf("字符串中其他字符的个数为%d\n", othernum)

}