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发表于 2012-11-13 08:48:12
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1判断语句
1 o/ m" j' L6 g# t! g+ j3 P if <condition> then
2 X/ }# S0 Y0 U) B! V! q <statement sequence1>;
3 X: S! _, x) h' } elseif <condition> then0 K4 t! ]; o. ^0 |6 r! y
<statement sequence2>;* E6 v$ s" Z/ o V% A
else
& ^# W8 z9 O. ]( [1 c <statement sequence3>;! Z* b5 F6 K" `
end;1 Q0 b$ @9 B9 \, n- q# D
如果分支比较多，用：
! V! @& c$ M+ e( w. X9 I inspect <expression>
X: P: d/ @& t& W: T7 ]2 V when <constant_list> then7 {* X8 W( _* J. B5 w# F
<statement sequence1>;
, c3 Z- O7 G: _+ Q8 Z; c when <constant_list> then6 q0 ~8 v; U6 B5 d7 n
<statement sequence2>;' I+ K9 A# b! q% K3 W/ C
...
8 ~- f3 g* U' O; t& b! w else' C, c3 T9 E" i1 ]/ s! e
<statement sequence3>;
# @; W/ ~, ? Kend;
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2循环语句, F& H6 E9 `/ A8 l. y& K
(1) from <statement sequence1>
6 o9 @# I/ y& B8 D& ^ until <condition> loop& r2 g- t5 V3 m7 N) z5 X
<statement sequence2>;
. Q4 G! {3 M8 O ^ end;
' |3 i- w m+ P- p) y0 ^ (2) while <condition> loop* A2 M( ]& q9 i+ z1 N5 ]# \3 I. p
<statement sequence1>;2 k ], p2 P2 J1 C/ X6 H* F
end;
+ f: e( U" R9 j e (3) repeat 9 O1 M/ Z: k: D7 k9 d4 S
<statement sequence1>;4 m& d& Z7 X) a" |
until <condition>;
9 u5 \* I q+ x0 T5 g% p (4) for <condition> to <condition> loop& I9 M8 `& {3 s" U o' }
<statement sequence1>;" I! z" U$ m% G
next;
9 I% ]+ x5 S+ Y4 z( ]* h3中断语句
$ b) ~- j& G, B waituntil <condition> prio <integer expression>;
+ S* n( C+ Z% o# ^2 O/ G A
+ O u" a5 U) B8 ]3 E! z% [! H2 f, Z( t- ?; G) ~6 g
以上为常用的函数！0 h' M" ^ n8 M, u7 y0 Q
还有很多，如有需要我把资料发到你邮箱里 1 S7 }$ c9 `* H k% E8 D
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