Simula: A roots of every OO Language

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  1. One of offsprings of Algol family.
  2. Mother of all object-oriented language.
  3. Example: Using class object. 

    % a sample Simula program
begin
    class Greetings(n); integer n;
    begin
        procedure Say(s); Text s;
        begin integer i;
            for i := 1, 2 * i while i < n do begin
                Outint(i, 5);
                Outtext(" ");
                Outtext(s);
                Outimage
            end
        end;
        Outtext("new Greetings created with n=");
        Outint(n, 0);
        Outimage
    end;
    ref(Greetings) howdy;
    howdy :- new Greetings(Inint);
    howdy.Say("hello, world");
end **** of sample Simula program ****

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