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发表于 2012-11-13 08:48:12
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1判断语句% P1 B# @5 u9 ]# H& U% N
if <condition> then
' P% M: m9 E: O3 W <statement sequence1>;- Y+ O+ R4 f8 j5 j
elseif <condition> then
4 |# E5 U2 f& `/ G; n: N <statement sequence2>;
! |. \6 J6 N, @) g else
( u+ E' q& ?6 _, g& V) V- | <statement sequence3>;
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如果分支比较多，用：
! k- P( P) ?3 I7 C) |! j inspect <expression>1 A. n- D: [! F( u M% ?1 q
when <constant_list> then1 G4 c" w+ D4 N1 M& @/ ?7 s, e
<statement sequence1>;
9 H5 F& f( B1 F( l3 p when <constant_list> then2 K. O( m1 `6 Q# Z, n
<statement sequence2>;
% H: U+ v4 X2 [3 F. W ...- K# P/ Y; Z1 P3 A3 g( ^
else k3 H. Z! d, {$ L
<statement sequence3>;
% N. L7 F9 T6 X2 W# J& {( Y9 Kend;
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6 |; o' ~5 [# V1 r: j/ a2循环语句
# _. S9 J7 t4 u7 g8 F1 i4 c& z& P9 x (1) from <statement sequence1># C4 B; Y" b# p( \4 o& h7 Q* b
until <condition> loop
+ X8 t. j4 t2 F$ z0 n6 `4 P6 w <statement sequence2>;- a# Y' K* k& u, y- K
end;
& B% {2 I A3 H1 M( a+ [ (2) while <condition> loop
# A2 E' v7 Q0 |/ k- }5 u <statement sequence1>;7 z* q, P! g9 Y' J+ x, {" d
end;$ X% [' }8 }, I5 @# a+ ^( i) d9 S
(3) repeat
1 L, [3 G. u, d- l* e# M' @ <statement sequence1>;: L% w. V t3 b0 N+ R# H0 c% D" L( B
until <condition>;1 D/ {3 L. R# o0 @; N! d+ U
(4) for <condition> to <condition> loop
1 z- ]6 P. e. ^) d/ a) G <statement sequence1>;; I: K0 G' F. t. o
next;
( g. w! C3 q h8 j3中断语句
% g; T/ N! z. J3 O" g7 r* \; g$ c waituntil <condition> prio <integer expression>;4 [& ~0 t2 T, ?5 W
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7 e, h# y; E# l6 G/ _以上为常用的函数！* |0 d/ T6 ^2 V' J' z% P1 J
还有很多，如有需要我把资料发到你邮箱里 4 T" o. q% c4 Q
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