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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句& b5 [9 h/ J( ^+ e B4 y3 H
if <condition> then) T. L/ Z! [" V. C/ G% R. C; Z
<statement sequence1>;! Q' `6 L& a3 B. d3 J7 O
elseif <condition> then: G0 `; m8 R% B/ ^0 Y- T
<statement sequence2>;
% [( i2 J- Y L$ X8 o9 S else
1 O) V) K7 w5 b! f <statement sequence3>;
9 \6 g4 \) v: ^# Z end;
) c1 Q8 }/ q6 Q# T V" m1 i6 c如果分支比较多，用：
, i. I4 r! G/ ^5 d) d1 Z6 i; J inspect <expression>
$ T+ R/ p4 r) F! T1 w3 ~% X" g when <constant_list> then' a% l9 R" w1 k
<statement sequence1>;
, O, k0 A% m+ S' y8 x when <constant_list> then
! N+ e; e- B, T <statement sequence2>;
4 t7 C1 a' L# E; U3 u& Y2 W ...
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<statement sequence3>;
5 V& t+ a$ A o8 `2 W" Bend;
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2循环语句
2 Q; e) c2 G- ^: W: C& ]/ j2 X (1) from <statement sequence1>
$ c# q& Z6 Z! o& J$ u. c until <condition> loop
! ], F8 i. r+ \0 I7 |, J; \4 G1 @- T <statement sequence2>;
) m$ V: \$ `" k9 \0 _ end;* O/ ]0 c: C+ ~
(2) while <condition> loop1 V" Y: {% H. q. w5 p
<statement sequence1>;
2 O9 e: P2 t. f end;8 ?. N1 g6 r6 A3 l
(3) repeat
1 L7 O) u$ R# j5 [8 f <statement sequence1>;
! @+ S( K: I7 c s until <condition>;
+ d; u% H3 P" J# M9 S9 H (4) for <condition> to <condition> loop
; k/ Z3 V: ?! g! @ <statement sequence1>; }$ s- @4 P9 g; ]
next;
' ?2 y: F& t n$ q; W4 v9 L3中断语句
; P% y+ W3 I1 {) K2 \9 y waituntil <condition> prio <integer expression>;! |3 q0 w; t5 V6 y: T
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9 T) W6 T$ T& D& P' F以上为常用的函数！2 |1 ]% \$ b7 O' G
还有很多，如有需要我把资料发到你邮箱里 . O4 X4 Y! b5 h% Q
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