You are making a file downloader. To make the downloads faster, you decide to use concurrency. Each file download will run as a

Question

Can anyone give me some hints on this one pls

Answer 1

package main
import "fmt"
//define the download() function
func download(s int, c chan int) {
var sum int
sum = 0
for i:=0; i<=s; i++ {
sum += i
}
c<-sum
}

func main() {
ch1 := make(chan int)
ch2 := make(chan int)
ch3 := make(chan int)

var s1, s2, s3 int
fmt.Scanln(&s1)
fmt.Scanln(&s2)
fmt.Scanln(&s3)

go download(s1, ch1)
go download(s2, ch2)
go download(s3, ch3)

//output the sum of all results
fmt.Println(<-ch2 + <-ch1 + <-ch3)
}

Answer 2

package main
import "fmt"

func download(s int, c chan int) {
var sum int
sum = 0
for i:=0; i<=s; i++ {
sum += i
}
c<-sum
}

func main() {
ch1 := make(chan int)
ch2 := make(chan int)
ch3 := make(chan int)

var s1, s2, s3 int
fmt.Scanln(&s1)
fmt.Scanln(&s2)
fmt.Scanln(&s3)

go download(s1, ch1)
go download(s2, ch2)
go download(s3, ch3)

fmt.Println(<-ch2 + <-ch1 + <-ch3)
}

Answer 3

1. create a function with size and channel parameters
2. store sum of size to channel
3. sum all ch with

fmt.Println(<-ch1+<-ch2+<-ch3)

Answer 4

answer:

package main
import "fmt"
//define the download() function
func download(s int, c chan int) {
var sum int
sum = 0
for i:=0; i<=s; i++ {
sum += i
}
c<-sum
}

func main() {
ch1 := make(chan int)
ch2 := make(chan int)
ch3 := make(chan int)

var s1, s2, s3 int
fmt.Scanln(&s1)
fmt.Scanln(&s2)
fmt.Scanln(&s3)

go download(s1, ch1)
go download(s2, ch2)
go download(s3, ch3)

//output the sum of all results
fmt.Println(<-ch2 + <-ch1 + <-ch3)
}

Answer 5

I really need this app but its so slow ?