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发表于 2012-11-13 08:48:12
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1判断语句
4 ? v$ L5 R% \ if <condition> then% X) \& I5 ]1 ]" m6 P1 n
<statement sequence1>;
4 s. Z9 i1 v ]1 f I9 Q elseif <condition> then
3 w- Q" E& w+ Z6 J" A <statement sequence2>;
7 W: m3 ?7 |# c1 t& `- l4 g else 4 v7 O6 y3 U4 M- \2 t
<statement sequence3>;
; R8 j4 l0 S# E! o; G end;
: y" ?' k, R! f/ t9 F- a如果分支比较多，用：
: v. h: m/ ^7 A1 h$ s inspect <expression>% X4 h& E- q5 z& V
when <constant_list> then
1 f9 O% b/ b9 _/ V! E <statement sequence1>;( f) Z5 ~- `! V: @
when <constant_list> then; \5 T8 R" O6 ^0 L+ w1 O
<statement sequence2>;% Q) C) T3 I* g% U* _( h* x# K
...
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<statement sequence3>;
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$ j6 A8 e. Q7 I2循环语句8 z) N. [8 e3 f% O4 R
(1) from <statement sequence1>8 L0 w5 a& ]0 M. d% h: c5 |* H
until <condition> loop. C/ g$ \6 Q0 b
<statement sequence2>;
7 f* [' D" T6 m4 r: t, q2 U, r% p end; m, v5 m! d$ B# S6 U
(2) while <condition> loop
7 X: K* W1 z6 w' v2 h- c' R <statement sequence1>;
2 g# P$ I' Y. D8 t end;
+ P' v* Q1 ]8 b7 n8 i (3) repeat
! O0 ]) J% m; \3 L( V2 g$ C& ?; g H! W0 h <statement sequence1>;7 L x5 [2 C. n% ]$ |: L8 ]
until <condition>;
5 |4 G. J0 a6 J5 w+ e9 u3 Y% H) g (4) for <condition> to <condition> loop$ X7 k4 [8 h' u! ~" u2 R4 S/ Q
<statement sequence1>;; g: G( Z, h3 X6 |$ n% Q# b; R
next;
3 ?9 s* P. d- ?4 U3中断语句 G4 o1 |9 g, _5 _+ |5 Y9 z1 A
waituntil <condition> prio <integer expression>;
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以上为常用的函数！3 h9 I. N0 a, }4 P" A/ Y5 C
还有很多，如有需要我把资料发到你邮箱里 4 A/ f# ~, r" C3 l7 U \ J
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