39 lines
561 B
Go
39 lines
561 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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"strings"
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)
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func main() {
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if len(os.Args) < 2 {
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log.Println("need to provide filename!")
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os.Exit(1)
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}
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file, err := os.Open(os.Args[1])
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if err != nil {
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os.Exit(1)
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}
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defer file.Close()
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scanner := bufio.NewScanner(file)
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var wordCount int
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for scanner.Scan() {
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// This is done for each line of the file.
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words := strings.Fields(scanner.Text())
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wordCount += len(words)
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}
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if scanner.Err() != nil {
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log.Println(scanner.Err())
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os.Exit(1)
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}
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fmt.Printf("Found %d words", wordCount)
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}
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