Why does this not work?

[Tobi G. via Digitalmars-d-learn]

On Friday, 1 January 2016 at 14:20:26 UTC, Tobi G. wrote:
> The solution is that readln() returns a string that also 
> contains the newline
> this can be solved by easily stripping the newline off
>
> import std.string;
>
> int i = to!int(input.strip);

Sorry my bad english.. i wrote solution but meant problem