import std.stdio;

I am somewhat new to D, and I am trying to receive user input, like this, with a prompt:

string str;
writeln("Enter a string: ");
str = readln;
writeln(str);

However, the prompt appears after I enter the input; any reason why?

I've trawled the internet for a good hour, but I can't seem to find an answer.

On Saturday, 29 April 2017 at 21:09:13 UTC, fred wrote:
> import std.stdio;
>
> I am somewhat new to D, and I am trying to receive user input, like this, with a prompt:
>
> string str;
> writeln("Enter a string: ");
> str = readln;
> writeln(str);
>
> However, the prompt appears after I enter the input; any reason why?
>
> I've trawled the internet for a good hour, but I can't seem to find an answer.

Your code is correct, it's your terminal or whatever you use to see your program's output that doesn't flush stdout. You can force it though:

string str;
writeln("Enter a string: ");
stdout.flush;
str = readln;
write(str);

On Saturday, 29 April 2017 at 21:18:27 UTC, cym13 wrote:
> On Saturday, 29 April 2017 at 21:09:13 UTC, fred wrote:
>> import std.stdio;
>>
>> I am somewhat new to D, and I am trying to receive user input, like this, with a prompt:
>>
>> string str;
>> writeln("Enter a string: ");
>> str = readln;
>> writeln(str);
>>
>> However, the prompt appears after I enter the input; any reason why?
>>
>> I've trawled the internet for a good hour, but I can't seem to find an answer.
>
> Your code is correct, it's your terminal or whatever you use to see your program's output that doesn't flush stdout. You can force it though:
>
> string str;
> writeln("Enter a string: ");
> stdout.flush;
> str = readln;
> write(str);


Thank you, again.