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发表于 2012-11-13 08:48:12
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1判断语句) t p* S; }0 |8 t% d1 ]- b
if <condition> then
8 S- j3 [1 a" H( l6 E <statement sequence1>;
) U2 {' f0 f0 |6 o7 x$ J elseif <condition> then& m d+ A \9 |, u8 j. Y# x1 B. P
<statement sequence2>;
" m7 R' f( E1 Y: R/ Q* C else
9 {8 K" y" }: j <statement sequence3>; G8 `1 D7 f! s. J* ]4 v
end;1 O4 a4 `9 {9 K. w# ^" f
如果分支比较多，用：
0 i) ]+ p* h. u6 V4 I% T inspect <expression>; l! F9 q5 v f8 x0 T
when <constant_list> then
# @4 l0 k4 B0 b( x- z; }. {. Q <statement sequence1>; K# \! L5 X$ ^& D! j. _
when <constant_list> then0 I* z8 |6 x! k/ x/ H/ _" G# x
<statement sequence2>;
6 B; o& L7 g& f" Y ...
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<statement sequence3>;; b: O) `0 i# p0 @
end;
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7 D! D* H4 ?7 u4 d+ c3 ^% C- M2循环语句
( Q9 l2 O0 m E2 W$ z; x (1) from <statement sequence1>0 ~! C( L+ A A. ]1 A( o4 G
until <condition> loop
8 s W% e0 q2 R7 r! S2 k# `, L <statement sequence2>;
5 i2 D* v/ B* W# B- K; z9 P end;5 ?2 d0 ~! _& ^5 E+ B8 s7 f C
(2) while <condition> loop
- ~. Y* c+ o4 Y6 b <statement sequence1>;
" Z+ V( ?* C9 g/ _3 O* e8 ] end;- N1 s) ~$ \+ S& i h7 d2 U
(3) repeat 9 e$ w. }: W2 c0 g
<statement sequence1>;# Y; V; X9 f, |8 {; \2 o/ N
until <condition>;
1 H4 Q1 l3 ~9 P O (4) for <condition> to <condition> loop
+ D W/ h0 [3 y5 I" V+ _- a: y <statement sequence1>;
& Z% s3 P: l* n& f4 m8 j5 [7 s next;8 q; w$ {! B0 J d( P1 P( s; M
3中断语句
5 a- }6 J" L* c6 U! D ]/ I0 L waituntil <condition> prio <integer expression>;# w6 r/ Y9 J3 _5 y: Z3 V @
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以上为常用的函数！8 w. a, Q! v, c7 Q8 S* c
还有很多，如有需要我把资料发到你邮箱里 # i$ ^' d, ]* l2 `
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