package main
import (
"sync"
)
var count = 5
func main(){
wg:=sync.WaitGroup{}
chanA :=make(chan struct{},1)
chanB :=make(chan struct{},1)
chanC :=make(chan struct{},1)
chanA<- struct{}{}
wg.Add(3)
go printA(&wg,chanA,chanB)
go printB(&wg,chanB,chanC)
go printC(&wg,chanC,chanA)
wg.Wait()
}
func printA(wg *sync.WaitGroup, chanA chan struct{}, chanB chan struct{}) {
defer wg.Done()
for i:=0;i<count;i++{
<-chanA
println("A")
chanB<- struct{}{}
}
}
func printB(wg *sync.WaitGroup, chanB chan struct{}, chanC chan struct{}) {
defer wg.Done()
for i:=0;i<count;i++{
<-chanB
println("B")
chanC<- struct{}{}
}
}
func printC(wg *sync.WaitGroup, chanC chan struct{}, chanA chan struct{}) {
defer wg.Done()
for i:=0;i<count;i++{
<-chanC
println("C")
chanA<- struct{}{}
}
}
image.png
