readf error bug?

[Dennis Ritchie via Digitalmars-d]

On Saturday, 9 May 2015 at 08:30:31 UTC, Dave Akers wrote:
> The following...
>
> import std.stdio;
>
> void main() {
> 	write("How many students are there? ");
> 	int studentCount;
> 	readf("%s", &studentCount);
> 	write("How many teachers are there? ");
> 	int teacherCount;
> 	readf("%s", &teacherCount);
>
> 	writefln("Got it: there are %d students.", studentCount);
> 	writefln("And there are %d teachers.", teacherCount);
> }
>
>
> When given the input...
> 10
> 42
>
> will produce the error...
> std.conv.ConvException@/usr/include/dlang/dmd/std/conv.d(2013):
> Unexpected '4' when converting from type LockingTextReader to 
> type int
>
> I understand what is wrong and how to fix it but the produced 
> error is
> incorrect.

To '\ n' does not remain in the input stream, it is necessary to 
write so:
-----
readf("%s ", &studentCount);