{Prueba del triangulo de pascal en Pascal}
{29/01/21 - Usar enteros de 32 bits en lugar de 16}
{$mode objfpc}
program PascalTriangle (output);
uses
crt, sysutils;
var
Levels : integer;
type
Values = array of integer;
PValues = ^Values;
function CalculateLevel (Level : integer) : PValues;
var
i : integer;
Result1 : PValues;
PResult : PValues;
begin
new(Result1);
Setlength(Result1^, Level);
if (Level = 1) then
begin
Result1^[1] := 1;
end;
if (Level = 2) then
begin
Result1^[1] := 1;
Result1^[2] := 1;
end;
if (Level > 2) then
begin
PResult := CalculateLevel(Level - 1);
for i := 1 to Level do
begin
if (i = 1) or (i = Level) then
begin
Result1^[i] := 1;
end
else
begin
Result1^[i] := PResult^[i] + PResult^[i - 1];
end;
end;
end;
exit(Result1);
end;
procedure DrawPascalTriangle(Number : integer);
var
i,j : integer;
Result1 : PValues;
begin
if (Number > 20) then
begin
writeln('El nivel maximo es 20');
end
else
begin
for i := 1 to (Number) do
begin
Result1 := CalculateLevel(i);
for j := 1 to i do
begin
write(Result1^[j], ' ');
end;
writeln();
end;
end;
end;
{Programa principal}
begin
writeln('Ingresa el número de niveles');
readln(Levels);
DrawPascalTriangle(Levels);
writeln('Listo');
end.
