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发表于 2012-11-13 08:48:12
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1判断语句% D& R5 F1 T. A
if <condition> then7 _: i: Q4 }3 P V+ I
<statement sequence1>;. J% M% H( i5 z) q4 c z2 Z# |
elseif <condition> then' m$ T( t% h1 E. _
<statement sequence2>;
& W' e5 Q4 h7 ^! X. b( B2 L else
! ?: U/ e+ N# o7 s- Y2 Q8 u <statement sequence3>;
+ j0 q8 {; N' t! I. L end;4 c2 B' E( `* j4 H+ W7 c
如果分支比较多，用：
! Q# O4 ~1 J( ?' ^, W n- l inspect <expression>
, [2 y! }! p5 F% F when <constant_list> then1 A+ H4 t: n. W6 V I9 B! E7 u
<statement sequence1>;
/ f- V$ F% Y0 a. ~3 I. f# x when <constant_list> then
% R$ r$ }4 h% c, s6 n <statement sequence2>;
& S9 U" \% z3 e ...! ]$ I' H H$ k3 _7 l: f J5 @: g
else& @2 s2 g+ u' W R- p5 Y- C( T
<statement sequence3>;
& Z2 L, M( C% F. M$ q. mend;
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7 V/ B9 b; S( Z, |: z7 C v5 G2循环语句
$ v0 I* l$ D6 z. H) s6 \' _ (1) from <statement sequence1>8 ^4 P- _5 a) y: Q" f
until <condition> loop# m' ?. | B/ o
<statement sequence2>;. D* e) g% X+ d; D# {& [
end;. |& S% V6 T/ C; [+ o' Z7 [5 Y
(2) while <condition> loop0 Q; A4 R8 O9 ?0 I# E( q% x
<statement sequence1>;
# U1 f. }0 F' Z0 [ end;
4 F' N7 d4 I3 H+ S( {2 D (3) repeat ; p, G1 X, S/ G8 v: V" r
<statement sequence1>;
3 K1 w$ }% ]# a until <condition>;6 {0 K9 @" k+ q9 Y, m5 N% i
(4) for <condition> to <condition> loop+ N4 y+ D9 @0 W
<statement sequence1>;( v1 r5 t' ~( S3 C) b1 x2 L. [) f
next;
: A7 l8 n& O3 Q# Q3 {6 Z% Z% R3中断语句+ {) @& t) E* _8 Z9 ?+ G% z# I4 ?* ?
waituntil <condition> prio <integer expression>;
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5 {. a# ]$ A; B" v8 E! H以上为常用的函数！# X* x; y: q% b" ]! L; P
还有很多，如有需要我把资料发到你邮箱里
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