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发表于 2012-11-13 08:48:12
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1判断语句: n. Y7 _& y; V: T. O* ^% v. M
if <condition> then
2 @4 i) I6 g& x* J <statement sequence1>;
! T7 i6 F/ M" {0 {: ^- a6 H) k elseif <condition> then. E8 D/ I) O2 T9 L& N5 w
<statement sequence2>;9 \" o0 ~& z2 I8 g' h& w$ G
else 2 r$ O A* n \5 w+ I
<statement sequence3>;
/ R' J/ Q% s) W& j9 M5 H end;
( [3 N- A% A$ C" V如果分支比较多，用：
! o2 x0 z+ i& o inspect <expression>6 g2 g) [7 ~% A2 S: F0 [$ [! u5 N
when <constant_list> then
9 ]! S0 o5 e" Y% ~/ u) G" z7 J <statement sequence1>;5 V/ ^/ K1 m7 {6 m4 m9 n
when <constant_list> then: }1 g& c( Q' N2 F7 ~ `' ^
<statement sequence2>;
$ S* w# l, G8 R) d ...
$ }, q/ y7 w: L' } else, d. e* f' i2 Y% p
<statement sequence3>;" M. C% Q* G; j+ S, D2 T+ N
end;
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2循环语句+ F- t0 Y% s5 G* [
(1) from <statement sequence1>
6 U8 H4 `& l* I+ C8 ~) A until <condition> loop
4 P# V" P4 T C; S <statement sequence2>;
% M1 a7 {8 O9 v4 j/ E# @ end;
5 X1 N, g x- K& _" s$ G (2) while <condition> loop; R: i( M- k9 ~+ \# j+ M
<statement sequence1>;
# ~+ E1 P ^4 R- n, y9 _ end;
5 d3 o; s0 U0 e1 Z8 u1 ^" p' Z (3) repeat 8 O' l2 w0 [; t N% G8 M0 N
<statement sequence1>;- K; G6 [1 w. Q* t, m( O ^
until <condition>;( Z: s1 m5 |( N3 W2 w7 B
(4) for <condition> to <condition> loop
) S# P- s. f' M! h3 t& q <statement sequence1>;- E: }; i* I" I" G
next;
8 ?" i7 n" P9 M3中断语句9 `' m" @, {0 Q* V# @ o2 A
waituntil <condition> prio <integer expression>;% j. e; C9 d; z+ H
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5 s* \1 W' K, {; \9 E( f( z4 \以上为常用的函数！# L1 A, h: |4 d! q8 R* |
还有很多，如有需要我把资料发到你邮箱里 8 E" L# D8 F+ d' \* J( j( x
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