day01-11for

//基本格式
for i := 0; i < 10; i++ {
    fmt.Println(i)
}

//变种1
q := 5
for ; q < 10; q++ {
    fmt.Println(q)
}

//变种2
z := 5
for z < 10 {
    fmt.Println(z)
    z++
}

//无限循环
for {
    fmt.Println("213")
}

//for range 循环
s := "Hello沙河"
for a,b := range s{
    fmt.Printf("%d  %c\n",a,b)
}