45 lines
761 B
Go
45 lines
761 B
Go
package main
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import (
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"bufio"
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"fmt"
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"log"
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"os"
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"strconv"
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"strings"
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"git.linuxhg.com/john-okeefe/keyboard"
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)
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func Error(err error) {
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if err != nil {
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log.Fatal(err)
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}
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return
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}
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func average() {
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fmt.Printf("What is the name of the file: ")
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fileString, err := keyboard.GetString()
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Error(err)
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fileString = strings.TrimSpace(fileString)
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file, err := os.Open(fileString)
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Error(err)
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var sum float64 = 0
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scanner := bufio.NewScanner(file)
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counter := 0
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for scanner.Scan() {
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number, err := strconv.ParseFloat(scanner.Text(), 64)
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Error(err)
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sum += number
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counter++
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}
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err = file.Close()
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Error(err)
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if scanner.Err() != nil {
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log.Fatal(scanner.Err())
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}
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sampleCount := float64(counter)
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fmt.Printf("Average: %0.2f\n", sum/sampleCount)
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}
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