I am new to Go and want to create and initialise an struct array in go. My code is like this

```
type node struct {
name string
children map[string]int
}

cities:= []node{node{}}
for i := 0; i<47 ;i++ {
    cities[i].name=strconv.Itoa(i)
    cities[i].children=make(map[string]int)
}

```

I get the following error:

```
panic: runtime error: index out of range

goroutine 1 [running]:
panic(0xa6800, 0xc42000a080)

```

Please help. TIA :)