Re: basic interactive readf from stdin

[karthikeyan via Digitalmars-d-learn]

On Saturday, 26 December 2015 at 19:52:15 UTC, Adam D. Ruppe 
wrote:
On Saturday, 26 December 2015 at 19:40:59 UTC, Jay Norwood 
wrote:
Simple VS console app in D.

If you are running inside visual studio, you need to be aware 
that output will be block buffered, not line buffered, because 
VS pipes the output making the program think it is talking to 
another program instead of to an interactive console (well, 
because it is!)

Add a stdout.flush(); after writing to force it to show 
immediately. I really think the read functions ought to flush 
output too because this is such a FAQ. (indeed, my terminal.d 
does flush output when you request input)

I experience the same as the OP on Linux Mint 15 with dmd2.069 
and 64 bit machine.  I have to press enter twice to get the 
output. I read http://ddili.org/ders/d.en/input.html and inserted 
a space before %s but still no use. Am I missing something here 
with the latest version?

Code

import std.stdio;

int main(string[] argv)
{
  string nm;
  readf(" %s\n",&nm);
  writeln("nm:",nm);
  // readf(" %s\n",&nm);
  // writeln("nm:",nm);
  return 0;
}


Output

56
2
nm:56