, . , , , . ( ). True (), , , False (), .
. , . . .
, , (=, <, >, <=, >=, <>), , : - NOT, ( Ȕ) - AND, ( Ȕ) - OR, Ȕ - XOR, - EQV.
, . , .
= | |
< | |
> | |
<= | |
>= | |
<> |
, , - NOT, AND, OR, XOR .:
AND() , ;
OR() , ;
XOR( ) , ;
NOT( ) , TRUE, FALSE .
.
| NOT x | x AND y | x OR y | x XOR y | EQV y | |
X | Y | |||||
T | T | F | T | T | F | T |
T | F | F | F | T | T | F |
F | T | T | F | T | T | F |
F | F | T | F | F | F | T |
:
5 < 10 | True, 5 10 |
5 > 10 | False, 5 10 |
7 <> 3 | True, 7 3 |
X > 45 | True, X 45; False |
5-1 > 1+2 | True, 5-1 (4), |
1+2 (3) , 4 > 3, .. 4 3 |
|
|
IF Then Else
: LTrue, ( ), Then, , Else. Else ( ) .
:
If < L > Then < .> [ Else < > ]
: If x mod 3=0 Then TextBox4.Text= 3
If x<>0 Then K=K+1: S=S+X
If x > 0Theny=SQR(x) Else y=1
Iflambda< 1Orbeta = 3Thenx=0
:
If < L > Then
< >
[ Else
< > ]
End If
IF END IF
IF :
If < _1> Then
< _1>
[ ElseIf < _2 > Then
< _2>
ElseIf < _3 > Then
< _3>
ElseIf < _ N > Then
< _ N >
Else
< ELSE>]
End If
. <_1> , <_1> , END IF, <_2> .. , ELSE, , - , END IF.
:
If x>=a And x<=b Then
TextBox2.Text =x [a,b]
End If
If x>xmax Then
Xmax=x
K=K+1
Exit For
End If
Select Case
Select Case IFThenEnd IF. Case . . , Case. , , Case. , Case Else:
Select Case < >
Case <_1>
<_1>
[ Case <_2>
<_2>
Case <_ N >
<_ N >
Case Else
<_ else > ]
|
|
End Select
Select:
Case Is >100 ' 100; Case x^2 ' ; Case -10 To 10 ' [-10,10]; Case 0 To 5, 12 To 19, 7, -2.5, Is > Sred |
Is , , Is. . OR.
1 ( 1)
Y: