import std.stdio : writeln, writefln;
import std.conv  : parse;

bool is_odd(uint n) {
    return n % 2 ? true : false;
}

void main(string args[]) {
    if (args.length < 2) goto end;

    try
        return writeln("odd: ", is_odd( parse!uint(args[1]) ));
    catch (Exception e)
        writeln(e.msg);

    end: writefln("usage: %s [int]", args[0]);
}