Var
size: integer;
counter: integer;
mas: array of integer;
Begin
Write('Введите количество чисел в последовательности: ');
Readln(size);
if (size > 0) then
begin
Writeln();
SetLength(mas, size);
for var i := 0 to size - 1 do
begin
Write('Введите ', i + 1, ' число: ');
Readln(mas[i]);
if ((mas[i] mod 3 = 0) and (mas[i] mod 10 = 2)) then
counter := counter + 1;
end;
Writeln();
Writeln('ответ: ', counter);
end
else
Writeln('Количество чисел должно быть больше нуля!');
End.
Объяснение:
1.
var
a:array[1..1000] of integer;
i, n:integer;
count:integer;
begin
writeln('Input n = ');
readln(n);
for i:=1 to n do begin
writeln('Input a[', i, '] = ');
readln(a[i]);
end;
count:=0;
i:=1;
while (i<=n) do begin
if (((a[i] mod 3) = 0) and ((a[i] - (a[i] div 10)*10) = 2)) then count:=count + 1;
i:=i+1;
end;
writeln(count);
readln;
end.
2.
var
a:array[1..1000] of integer;
i, n:integer;
count:integer;
begin
writeln('Input n = ');
readln(n);
for i:=1 to n do begin
writeln('Input a[', i, '] = ');
readln(a[i]);
end;
count:=0;
i:=1;
repeat
if (((a[i] mod 3) = 0) and ((a[i] - (a[i] div 10)*10) = 2)) then count:=count + 1;
i:=i+1;
until (i > n);
writeln(count);
readln;
end.