取近似值-golang版本

package main

import (
    "bufio"
    "fmt"
    "os"
    "strconv"
    "strings"
)

func main() {
    reader := bufio.NewReader(os.Stdin)
    text, _ := reader.ReadString('\n')
    index := strings.LastIndex(text, ".")
    lastValue, _ := strconv.Atoi(string(text[index+1]))
    firstValue, _ := strconv.Atoi(text[:index])
    if lastValue >= 5 {
        fmt.Println(firstValue + 1)
    } else {
        fmt.Println(firstValue)
    }

}