scanf表现异常？

Question

Below is my simple code, and whenever I try to enter role 'crack' on terminal, sometimes it takes it well, and sometimes it strangely takes it as 'Drack'. Why in the world would it do that? Its happening quite often

fmt.Println("
 Do you want crack a hash (type 'crack') or just help other nodes in cracking their hash (type 'help')?")
fmt.Scanf("%s
", &role)
fmt.Println("role taken is", role)
if role == "crack" {

Answer 1

This is maybe because you are using in scanf function instead of using in scanf try using it in succeeding Println statement as shown below:

fmt.Scanf("%s", &role)
fmt.Println("
role taken is", role)