Puzzle 22 Count Me a Million
 package​ main
 
 import​ (
 "fmt"
 "sync"
 )
 
 func​ main() {
 var​ count ​int
 var​ wg sync.WaitGroup
 
 for​ i := 0; i < 1_000_000; i++ {
  wg.Add(1)
 go​ ​func​() {
 defer​ wg.Done()
  count++
  }()
 
  }
  wg.Wait()
  fmt.Println(count)
 }

Guess the Output

images/aside-icons/important.png

Try to guess what the output is before moving to the next page.

images/hline.png

This code will print: 891239

images/hline.png

Different Output

Your output might ...

Get Go Brain Teasers now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.