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Old lady swallowed a fly: Difference between revisions
→{{header|Ada}}
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See also: [[99 Bottles of Beer]]
=={{header|Ada}}==
<lang Ada>with Ada.Text_IO, Ada.Containers.Indefinite_Doubly_Linked_Lists; use Ada.Text_IO;
procedure Swallow_Fly is
package Strings is new Ada.Containers.Indefinite_Doubly_Linked_Lists(String);
Lines, Animals: Strings.List;
procedure Swallow(Animal: String;
Second_Line: String;
Permanent_Second_Line: Boolean := True) is
procedure Print(C: Strings.Cursor) is
begin
Put_Line(Strings.Element(C));
end Print;
begin
Put_Line("There was an old lady who swallowed a " & Animal & ",");
Put_Line(Second_Line);
if not Animals.Is_Empty then
Lines.Prepend("She swallowed the " & Animal & " to catch the " &
Animals.Last_Element & ",");
end if;
Lines.Iterate(Print'Access);
New_Line;
if Permanent_Second_Line then
Lines.Prepend(Second_Line);
end if;
Animals.Append(Animal); -- you need "to catch the " most recent animal
end Swallow;
procedure Swallow_TSA(Animal: String; Part_Of_Line_2: String) is
begin
Swallow(Animal, Part_Of_Line_2 &", to swallow a " & Animal & ";", False);
end Swallow_TSA;
procedure Swallow_SSA(Animal: String; Part_Of_Line_2: String) is
begin
Swallow(Animal, Part_Of_Line_2 &" she swallowed a " & Animal & ";", False);
end Swallow_SSA;
begin
Lines.Append("Perhaps she'll die!");
Swallow("fly", "But I don't know why she swallowed the fly,");
Swallow("spider", "That wriggled and jiggled and tickled inside her;");
Swallow_TSA("bird", "Quite absurd");
Swallow_TSA("cat", "Fancy that");
Swallow_TSA("dog", "What a hog");
Swallow_TSA("pig", "Her mouth was so big");
Swallow_TSA("goat","She just opened her throat");
Swallow_SSA("cow", "I don't know how");
Swallow_TSA("donkey", "It was rather wonky");
Put_Line("There was an old lady who swallowed a horse ...");
Put_Line("She's dead, of course!");
end Swallow_Fly;</lang>
=={{header|ALGOL 68}}==
===Using Logic===
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