411 REFERENCE · Wikibooks
A Beginner's Guide to D/The Basics/Basic Input
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The built-in capabilities of D (meaning the capabilities of the runtime library Phobos) for input from a console (alias terminal or DOS-Box) are very restricted.
Here is a simple program that demonstrates string input with din.readLine() which reads a complete line of input. A line means all characters typed until the user pressed RETURN on keyboard. It doesn't mean a physical line in the console-window which is usually 80 characters wide.
import std.cstream; /* for din.readLine() */
import std.stdio; /* for writef()/writefln() */
void main()
{
char[] name;
writef("Hello friend. Please enter your name: ");
name = din.readLine();
writefln("Thanks, %s", name);
}