• Manfred Hansen <manfred toppoint.de> Mar 25 2005
• "Ben Hinkle" <ben.hinkle gmail.com> Mar 25 2005
• Manfred Hansen <manfred toppoint.de> Mar 25 2005
• Georg Wrede <georg.wrede nospam.org> Mar 25 2005

Manfred Hansen <manfred toppoint.de> writes:

Hello,


import std.stdio;
import std.math;
import std.conv;
import std.stream;
import std.c.stdio;

void main() {
        int r;

        while(1) {
                writef("Bitte geben Sie den Radius ein ");
                //flush(stdout); // ???
                r = toInt(std.stream.stdin.readLine());
                if (r == 0) {
                        break;
                }
                writefln("Die Kreisflaeche betraegt %f",PI * r * r);

        }
}

That is the output from the Programm:
hansen manni-lx:~/dd$ ./abbruch
3
Bitte geben Sie den Radius ein Die Kreisflaeche betraegt 28.274334


You see the "Bitte geben Sie den Radius ein" comes after the readline
function. I try to solve this with flush but without success.

Manfred

"Ben Hinkle" <ben.hinkle gmail.com> writes:

                writef("Bitte geben Sie den Radius ein ");
                //flush(stdout); // ???
                r = toInt(std.stream.stdin.readLine());


Flushing should work but I'm surprised you don't have to qualify stdout 
since there are two stdouts: one in std.c.stdio and one in std.stream. You 
could also not import std.stdio and just use std.stream and replace 
"writef(...)" with "stdout.writef(...)".

hope that helps,
-Ben

Manfred Hansen <manfred toppoint.de> writes:

Ben Hinkle wrote:

                writef("Bitte geben Sie den Radius ein ");
                //flush(stdout); // ???
                r = toInt(std.stream.stdin.readLine());


 Flushing should work but I'm surprised you don't have to qualify stdout
 since there are two stdouts: one in std.c.stdio and one in std.stream. You
 could also not import std.stdio and just use std.stream and replace
 "writef(...)" with "stdout.writef(...)".
 
 hope that helps,



Manfred 

Georg Wrede <georg.wrede nospam.org> writes:

Manfred Hansen wrote:
 Ben Hinkle wrote:
 
 
               writef("Bitte geben Sie den Radius ein ");
               //flush(stdout); // ???
               r = toInt(std.stream.stdin.readLine());


Flushing should work but I'm surprised you don't have to qualify stdout
since there are two stdouts: one in std.c.stdio and one in std.stream. You




Could it be because stdout is a pre-opened file handle, and thus not 
package dependent?

I.e. flush(stdout) uses the file handle (of which there only should be 
one), while having to write "std.stream.stdin..." is a function in a 
specific package.