return the other functions of the void main()

[Dennis Ritchie via Digitalmars-d-learn]

On Thursday, 9 April 2015 at 11:04:00 UTC, Dennis Ritchie wrote:
> Hi,
> Is it allowed in D similar designs?
>
> void main() {
> 	import std.stdio;
> 	return writeln("Hello, world!");
> }

It seems that you can not do so because writeln() something back, 
which leads to RUNTIME_ERROR in DMD 2.066.1:

OK:
-----
import std.conv;
import std.stdio;
import std.string;

void main() {
	
	int n = readln.strip.to!int;
	string s = readln.strip;
	
	foreach (from; 0 .. n)
	foreach (jump; 1 .. n) {
		bool ok;
		foreach (i; 0 .. 5) {
			int pos = from + i * jump;
			if (pos >= n || s[pos] != '*') {
				ok = true;
				break;
			}
		}
		if (!ok)
			return write("yes");
	}
	
	write("no");
}
-----
http://codeforces.ru/contest/526/submission/10641745?locale=en

RUNTIME_ERROR:
-----
import std.conv;
import std.stdio;
import std.string;

void main() {

	int n = readln.strip.to!int;
	string s = readln.strip;

	foreach (from; 0 .. n)
		foreach (jump; 1 .. n) {
			bool ok;
			foreach (i; 0 .. 5) {
				int pos = from + i * jump;
				if (pos >= n || s[pos] != '*') {
					ok = true;
					break;
				}
			}
			if (!ok)
				return writeln("yes");
		}

	writeln("no");
}
-----
http://codeforces.ru/contest/526/submission/10641695?locale=en