написать программу для мсв лого​

Program massiv;
Const N=10;
Var Rmin: integer;
j,i:integer;
C:array[1..N] of real;
T:array[1..2*N]of real;
Begin
For i:=1 to N do Begin
C[i]:=sqrt(i)* sin(2*i)/cos(2*i);
Write(C[i]:5:2, ' ');
End;
writeln('');

For i:=1 to N-1 do begin
T[i]:=C[i+1]-C[i];
T[N+i-1]:=C[i]-C[i+1];
end;

Rmin:=1;
for i:=2 to 2*N-2 do begin
if T[i]<T[Rmin] then
Rmin:=i;
end;

if Rmin<N then
writeln('naimenshaya raznost= ', Rmin+1, ' and ', Rmin, ' elementiv' )
else
writeln('naimenshaya raznost= ', Rmin-N+1, ' and ', Rmin-N+2, ' elementiv' );
end.

1.
var
  s: string;
  i, count: integer;
begin
  writeln('Vvedite stroky: ');
  readln(s);
  for i := 1 to length(s) - 2 do
    if copy(s, i, 3) = 'abc' then
      count := count + 1;
  writeln('Kol-vo: ', count);
end.
2.
var
  s1, s2: string;
  i, len1, len2: integer;
begin
  writeln('Vvedite stroky 1: ');
  readln(s1);
  writeln('Vvedite stroky 2: ');
  readln(s2);
  len1 := length(s1);
  len2 := length(s2);
  if len1 > len2 then writeln('1 stroka dlinnee')
  else if len1 < len2 then writeln('2 stroka dlinnee')
  else writeln('dlini strok ravnie')
end.
3.
var
  s1, s2, s3: string;
begin
  writeln('Vvedite stroky 1: ');
  readln(s1);
  writeln('Vvedite stroky 2: ');
  readln(s2);
  s3 := s1[1] + s1[2] + s2[1] + s2[2];
  writeln('Novaja stroka: ', s3);
end.