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发表于 2012-11-13 08:48:12
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1判断语句0 f. p; ?* o: E5 n$ }5 I; N/ J
if <condition> then
- I" N& e0 B7 G3 b6 ] <statement sequence1>;$ N$ R! M7 y* }% x
elseif <condition> then
, B* K9 D/ ]+ u$ Z0 r( n6 u <statement sequence2>;
3 S/ I1 d4 u$ X* \9 Y else
- O% n( ?7 g1 z% l0 S( Y <statement sequence3>;
8 v3 h. J: I2 S. ?1 o end;
, J2 f4 Z2 x, g. t如果分支比较多，用：* m0 d6 J3 g ~
inspect <expression>% }; K$ s- \- q
when <constant_list> then8 H3 }" C$ k2 @: w( n' c& Y
<statement sequence1>;
' c$ q& W$ v' B# V& a& @% p when <constant_list> then
3 a/ o. o; t* n <statement sequence2>;) c c5 B# ]% ?; o+ r
...
I$ [+ e* _) J, s else! G8 q8 R8 n$ p/ E A" N' Y
<statement sequence3>;* t0 ]5 I% V C8 f8 g! D" z6 c
end;
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& t3 J, D) X" Y2 |8 `4 _2循环语句
1 z! h( X$ O- S4 L7 { (1) from <statement sequence1>, i& D$ F5 ^! c4 c
until <condition> loop
( `) {9 R2 I7 q5 d, D w- n+ W$ @, G <statement sequence2>;* ]( H! ]+ J7 K7 d7 \
end;0 p% n1 S& t! k
(2) while <condition> loop# {& X5 V7 Z; F) r/ Q4 |+ L
<statement sequence1>;
" U: d% J: _% E7 V6 I end;3 N% z8 J2 _* K: _3 L' Z; D
(3) repeat " H d& l5 J$ L$ }/ L3 {5 z: {
<statement sequence1>;
- M4 d; q0 o0 P3 Z+ ]2 M9 O until <condition>;
; T& A9 j. m, Q (4) for <condition> to <condition> loop
- U, I, O* g% N3 t- T, W <statement sequence1>;- [3 |6 e% B! t" o# w& `
next;1 e' I0 C1 o$ y) D z0 i) k( w5 ?
3中断语句! J6 }& j6 m; \" s# a* j
waituntil <condition> prio <integer expression>;2 o8 V( C) m) q8 m! w
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以上为常用的函数！
' d7 F+ I" D4 |# ]# [+ s5 o还有很多，如有需要我把资料发到你邮箱里 + g$ c) T1 h6 o* T. o
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