.
| 2 |
| 1 |
:
IF < > THEN < 1 > ELSE < 2 >;
, . (=, >, <, >=, <=, <>) (and, or).
, < 1>, , < 2>.
, (begin end)
:
IF < > THEN < >;
, , , , .
, .
IF < > THEN < 1 > ELSE
IF < > THEN < 2 > ELSE < 3 >;
, .
: 
m ≤ x < n
IF (X >= m) and (X < n) THEN Y:= sqr (X);
:
() .
:
Case < > Of
< 1 >: < 1 >;
< 2 >: < 2 >;
.
Else
< N >;
End;
, .
. , , . , , Else. Else .
, .
:
,
,
.
:
+
:
While < > Do
Begin
< >;
|
|
|
End;
, .
. , , , .
:
+
-
:
Repeat
;
Until < >;
, . , , . , , , .
.
:
| i:= i; i; Δi |
, .
:
For < > := < > To < > Do
Begin
< >;
End;
. , , . . 1.
, :
For < > := < > DownTo < > Do
Begin
< >;
End;
- 1.
: = 1 2 3 N
N = 20.
