.


:




:

































 

 

 

 





: .

: . :

if <> then <1> else <2>;

. (True), < 1>, (False)- <2 >. :

if <> then <>;

, (False), if .

. : = (), <> ( ), > (), < (), >= ( ), <=( ). (and), (or), (no t). True False . and True, , False. or False, , True. not True False .

2. A B :

if a < b then min: = a else min: = b;

3. , X [ a, b] [ c, d]:

(x >= a) and (x<=b) or (x >= c) and (x<=d)

. <1 > <2> if, . else if. then else , begin.. end. begin < > end .

4. [ a, b]. , : [ a, b], [ a, b] [ a, b]:

if (x >= a) and (x<=b) then write( )

else if x > b then write( x )

else write( x );

5. ( 1) : , , , , .

, . . , . . Var , :

Var eps: real48 = 0.1; //

( Example_1) :

//

if (abs(a12+a23-a31)<eps)or

(abs(a12+a31-a23)<eps)or

(abs(a23+a31-a12)<eps) then

writeln(' ')

Else

begin

if (abs(a12-a23)<eps)and(abs(a12-a31)<eps) then

writeln(' ')

else

begin

if ((abs(a12*a12+a23*a23-a31*a31)<eps) or

(abs(a12*a12+a31*a31-a23*a23)<eps) or

(abs(a23*a23+a31*a31-a12*a12)<eps)) then

begin

writeln(' ');

if (abs(a12-a23)<eps)or

(abs(a12-a31)<eps)or

(abs(a31-a23)<eps) then

writeln(' ');

end

else if (a12=a31)or(a12=a23)or(a31=a23) then

writeln(' ')

else writeln(' ');

end;

end;

( 5) (.2):

.2. ( 5)

( ), :

Case <> of

m1: begin < > end;

m2: begin < > end;

.......

mn: begin < > end

else < >

end;

:

- ( );

- m1, m2, mn - ( ), label .

: , lse- ( ). lse- , .

6. , num.

Var num: integer;

Begin

write (' = ');

Readln (num);

Case num of

0,2,4,6,8: writeln (' ');

1,3,5,7,9: writeln (' ');

10..100: writeln (' 10 100')

Else

writeln (' 100')

End; ?????

1. . .

2. . .

3. : , , . : , , , . .

4. . : , , , .

5. y = k* x + b r . ? , , .

6. , , .

(a, b), (c, d). , ? , ?

7. , . : , , . , , .

8. a, b, c, d. , .

9. . - , , , , .

10. . , ?

11. a* b c* d k* p? .

12. . , .

13. . . .

14. , , . .

15. ? .

16. . , . , .

17. . , OY.

18. . , .

19. , : (x1, y1 ), (x2, y2 ), (x3, y3). , , .

20. . . , .

21. . , .

22. . , ? , , .

23. , . . , , ?

24. , , .

(a, b). (c, d)? , , ?

25. , , ?





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