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发表于 2012-11-13 08:48:12
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1判断语句' _4 Z) {+ H) h" |7 s; w
if <condition> then$ B# h5 D' h# b" R( g* }( T
<statement sequence1>;
& Y' K( E$ J0 ~$ ]4 ]- b2 u2 o elseif <condition> then
" |* c" G* I2 R5 P8 D- k <statement sequence2>;1 E/ N- p# X0 \/ b5 Z
else
) w, M2 }+ x1 g9 x9 l* L <statement sequence3>;
) w o/ ~6 @+ B7 v7 F3 {- T$ E% L, | end;
, W t; G) A$ Y$ @如果分支比较多，用：
! N; \( g o1 t& @8 T4 H inspect <expression>
# H/ F: B, F& }, v6 ]7 `* t when <constant_list> then7 v. {: L/ F- m; S9 W
<statement sequence1>;: e$ h1 h# S t0 T, t
when <constant_list> then- B% U6 x4 r; `7 a8 u
<statement sequence2>;6 U% `) y# ?" L, m# m
...
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<statement sequence3>;* W5 G8 r8 M" g. ~
end;
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. r8 ]1 p! y' U5 @8 E2循环语句( o* |0 \ O; ^9 G' b
(1) from <statement sequence1># I! v/ ~ P. n; Y- `. ?
until <condition> loop
n1 c8 K5 [5 H <statement sequence2>;! Q0 E a# }# ?" }
end;# S1 [5 A0 m: }6 ?
(2) while <condition> loop
9 Z/ x+ ]/ e4 ]0 N% b5 f& Z& S <statement sequence1>;
8 r# z9 D$ W0 O9 d( D; k P( y end;
" N/ F/ P# L% z* P. u9 v' C (3) repeat
8 M4 c% i4 t9 L" e <statement sequence1>;2 b; k8 L9 R1 R9 q$ \% j' P
until <condition>;
& z5 L' h/ T( |* B3 _ (4) for <condition> to <condition> loop: R% g! ^; t' }- w* Q
<statement sequence1>;# Z9 {* c! C# A
next;
6 M% X, A" x/ ^/ |3中断语句+ \1 M% D( G$ _9 ~5 X
waituntil <condition> prio <integer expression>;
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1 R0 O2 @ O1 g$ ]5 a" K以上为常用的函数！
( R6 N0 I( U' t( r! D0 D. H: r( A$ z还有很多，如有需要我把资料发到你邮箱里 # V1 I9 k; G6 D: I% {
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