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发表于 2012-11-13 08:48:12
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1判断语句
# J1 ^$ E3 _8 \+ o/ }+ m6 y* d if <condition> then8 X- V. m+ v: S, l8 A8 r) E
<statement sequence1>;
( O7 d1 @% F! ?. }- n elseif <condition> then( a6 r$ y" d" x* S A4 u, k
<statement sequence2>;6 t/ B H# R( q4 P) Q
else ( [3 F6 a6 V5 P+ s1 p0 S7 z% j
<statement sequence3>;
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如果分支比较多，用：
: J& p; S+ G* Q inspect <expression>
! m) \! E/ i& w! @5 Q when <constant_list> then# v f1 d% O9 i7 m
<statement sequence1>;
( S! q+ Z) X- b* G- P: u when <constant_list> then( Q- M* O8 ]: W. K
<statement sequence2>;- w+ f4 R: d$ U {
...+ P8 Q/ L4 @2 S: Q% _+ z
else; e1 ]- j6 W, x7 h
<statement sequence3>;
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0 O/ e z: n( N: I1 }6 t2循环语句
) J9 O: Q1 W v* V/ v (1) from <statement sequence1>2 ~/ j9 q5 G! D0 H: l1 @
until <condition> loop
0 }4 c, {. y; Y2 y <statement sequence2>;* V5 Q. T# `" Q$ \& J, V- F q8 c
end;
8 K u6 U7 x4 h( F& }7 _- v \ (2) while <condition> loop* s4 e% l' R0 A p! ~
<statement sequence1>;$ B- {- `. K* F8 x7 i, |( K$ @( x$ E. A
end;
: W; z6 a/ a4 y% s8 \ (3) repeat
8 E% j0 k' n: ] <statement sequence1>;1 g. m/ ?& G/ A
until <condition>;; B# A" y) \7 W7 B
(4) for <condition> to <condition> loop
, W7 r$ F. n6 l <statement sequence1>;+ t/ ^% y/ \/ }* f0 U; }" u4 s* J
next;
+ h9 o" S% O! R3 y/ ]) g# m4 Y( F3中断语句
$ [, l2 }/ l' y; p. F* U7 `( \+ O% J. f waituntil <condition> prio <integer expression>;& d; i2 k4 V0 D: n7 d
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以上为常用的函数！
* x- G$ r% y' ]. H还有很多，如有需要我把资料发到你邮箱里
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