User input readline || readf

[Dennis Ritchie via Digitalmars-d-learn]

It also works:

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import std.conv;
import std.stdio;
import std.string;

struct Human {
	string name;
	ushort age;
}

void print_human_list(Human[] human_list) {

	foreach(human; human_list) {
		writeln(human.name);
		writeln(human.age);
	}
	writeln();
}

void add_new_human(ref Human[] human_list) {

	write("Name: ");
	string name = readln.strip;

	write("Age: ");
	ushort age = readln.strip.to!ushort;

	Human tmp_human = {name, age};
	human_list ~= tmp_human;
}

void main() {

	Human[] human_list;
	
	for(;;) {

		writeln("A)dd New Human.");
		writeln("P)rint Human List.");
		writeln("Q)uit.");
		write(": ");

		char choice = readln.strip.to!char;

		switch (choice) {
		case('A'):
			add_new_human(human_list);
			break;
		case('P'):
			print_human_list(human_list);
			break;
		case('Q'):
			return;
		default:
			continue;
		}
	}
}
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http://ideone.com/0cS7Y4