Нужен простейший интерфейс сюда
{$APPTYPE CONSOLE}
var
L:Boolean;
n:Integer;
a,b,c,p,r:Real;
ch:Char;
begin
L:=True;
while L do
begin
Writeln(' MENU:');
Writeln('1. Raschet Ploshadi pryamoygolnika');
Writeln('2. Raschet Ploshadi treygolnika');
Writeln('3. Raschet Ploshadi kruga');
Writeln('4. EXIT');
Write('Viberite punkt menu: ');
Readln(n);
case n of
1:begin
repeat
Write('Vvedite storoni pryamoygolnika: ');
Readln(a,b);
if (a<=0) or (b<=0) then
Writeln('NEKKOREKTNO')
else
Writeln('Ploshad pryamoygolnika ravna ',
a*b);
Write('Prodolzit vichislenia (Y/N) ? ');
Readln(ch);
until UpCase(ch)='N';
end;
2:begin
repeat
Write('Vvedite storoni treygolnika: ');
Readln(a,b,c);
if (a<=0) or (b<=0) or (c<=0) then
Writeln('Nekkorektno')
else
if (a+b<=c) or (a+c<=b) or (b+c<=a) then
Writeln('nevozmozno vichislit')
else
begin
p:=(a+b+c)/2;
Writeln('ploshad treygolnika ravna ',
Sqrt(p*(p-a)*(p-b)*(p-c)));
end;
Write('prodolzit vichislenia (Y/N) ? ');
Readln(ch);
until UpCase(ch)='N';
end;
3:begin
repeat
Write('vvedite radius kruga: ');
Readln(r);
if r<=0 then
Writeln('nekkorektno')
else
Writeln('ploshad kruga ravna ',Pi*Sqr(r));
Write('prodolzit vichislenya (Y/N) ? ');
Readln(ch);
until UpCase(ch)='N';
end;
4:L:=False;
end;
end;
end.
2. Почти ничего не меня получим код для цикла while:
var
i, n, k: integer;
begin
i := 2;
readln(n);
while i <= n div 2 do begin
if (n mod i) = 0 then k := i;
i:=i+1;
end;
writeln('наибольший делитель ', n, ' = ', k);
end.
3. Аналогично для цикла Repeat:
var
i, n, k: integer;
begin
i := 2;
readln(n);
repeat
if (n mod i) = 0 then k := i;
i:=i+1;
until i> n div 2;
writeln('наибольший делитель ', n, ' = ', k);
end.