how to read and get data from txt file using golang

Question

I have a txt file , In this file I need only int value , how can I get this value ?

txt file - Profit = 10 at the Time of ->04-06-2021 20:21:59

I am getting this file by using this code ..!

    func Profit() string {
    TargetClosePrice := 110
    ontickerPrice := 100
    Time := time.Now()
    totalProfit := TargetClosePrice - ontickerPrice
    str := strconv.Itoa(totalProfit)
    value := `Profit = ` + str + ` at the Time of ->` + Time.Format("01-02-2006 15:04:05") + "\n"

    data, err := os.OpenFile("Profit.txt", os.O_APPEND, 0644)
    if err != nil {
        log.Fatal("whoops", err)
    }
    io.Copy(data, strings.NewReader(value))
    return str
}

but now I need only 10 from txt file..? how can I get ?

Zombo · Accepted Answer · 2021-04-11 03:17:56Z

1

I think this does what you want:

package main

import (
   "bufio"
   "fmt"
   "os"
)

func main() {
   f, e := os.Open("Profit.txt")
   if e != nil {
      panic(e)
   }
   defer f.Close()
   s := bufio.NewScanner(f)
   for s.Scan() {
      var n int
      fmt.Sscanf(s.Text(), "Profit = %v", &n)
      fmt.Println(n)
   }
}

https://golang.org/pkg/fmt#Scanf

answered Apr 11, 2021 at 3:17

Zombo

1

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1 Comment

glamp everest Over a year ago

thank's ..! can you tell me how can I get sum of all the data @StevenPenny

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