80 lines
1.4 KiB
Go
80 lines
1.4 KiB
Go
package main
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import (
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"bufio"
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"fmt"
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"os"
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)
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//Ищет наименьшее число из файла /var/data/data.txt и сохраняет его третью степень в /var/result/result.txt.
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const INPUT = "/var/data/data.txt"
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const OUTPUT = "/var/result/result.txt"
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func ReadlinesFromFile(filename string) ([]string, error) {
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file, err := os.Open(filename)
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if err != nil {
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return nil, err
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}
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var output []string
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scanner := bufio.NewScanner(file)
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for scanner.Scan() {
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output = append(output, scanner.Text())
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}
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err = file.Close()
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if err != nil {
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return nil, err
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}
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return output, nil
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}
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func WriteIntToFile(filename string, i int) error {
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file, err := os.Create(filename)
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if err != nil {
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return err
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}
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defer func(file *os.File) {
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err := file.Close()
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if err != nil {
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}
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}(file)
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_, err = file.WriteString(fmt.Sprintf("%d\n", i))
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if err != nil {
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return err
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}
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return nil
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}
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func main() {
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lines, err := ReadlinesFromFile(INPUT)
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if err != nil {
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fmt.Println(err)
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}
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minValue := 0
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for _, line := range lines {
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if intValue, err := fmt.Sscanf(line, "%d", &minValue); err != nil {
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fmt.Println(err)
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} else {
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if minValue >= intValue {
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minValue = intValue
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}
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}
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}
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if err = WriteIntToFile(OUTPUT, minValue); err != nil {
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return
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} else {
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fmt.Printf("Write %d to %s\n", minValue, OUTPUT)
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}
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fmt.Println("Second Service is end.")
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}
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