【Go】统计单词个数

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package main   import (     "fmt"     "os"     "bufio"     "strings" )   func receiveStringsFromStdin() string {     fmt.Printf("请输入一个字符串： ")     reader := bufio.NewReader(os.Stdin)     r, _ := reader.ReadString('\n')     return r }   func main() {     var (         s string         count map[string]int     )     count = make(map[string]int)     s = receiveStringsFromStdin()     //fmt.Printf("输入的字符串为： %s", s)     strArr := strings.Fields(s)     for _, v := range strArr {         _, e := count[v]         if !e {             count[v] = 1         } else {             count[v]++         }     }       for k, v := range count {         fmt.Printf("%s: %d次\n", k, v)     } }