begin
ReadlnString.Count(c -> c = 'а').Println
end.
Пример приведен на скрине.
Var X,Y:real;
Begin
Write('X = ');Read(X);
Write('Y = ');Read(Y);
if (X*X+Y*Y=1)or( (X>=0)and(Y>=0)and(X<=1)and(Y<=1) ) then Write('Попала')
else Write('Мимо')
End.
Var a,k:integer;
begin
k:=0;
readln(a);
while a<>0 do
begin
if (abs(a) mod 5=0)or(abs(a) mod 9=0)
then k:=k+1;
readln(a);
end;
writeln('k = ',k);
end.
Пример:
15
91
90
0
k = 2