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发表于 2012-11-13 08:48:12
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1判断语句
4 `) Z* R7 h/ g2 w& q if <condition> then
& D3 M( x9 m& w. c" p( c' N, Q <statement sequence1>;
p5 c9 M! S' ]4 e% f& ^ elseif <condition> then* A3 {3 ~$ g3 h& Z8 q# f7 y
<statement sequence2>;
% l5 {& M0 d; M/ n: Y9 n else $ S" d; x5 E8 J( P# t8 t
<statement sequence3>;8 K# a) x7 H- ?* K% L2 j
end;
7 @7 [4 C. O* A" m如果分支比较多，用：
, B& \$ x: r9 ?# U0 ]/ h7 G inspect <expression>" _8 r' e. U7 U; E5 }' ~! w
when <constant_list> then
, V! ~1 C$ r7 f4 W5 O <statement sequence1>;
9 N# {2 x( o1 s2 m* A* Z9 C when <constant_list> then
; F9 f; @1 {5 {) d1 I* c' x' v. o <statement sequence2>;* S# Z+ M/ ?- w+ f" X9 N- A
...7 }: E( Y) @; g! Q/ t
else" d% y$ e; K o, o! Y6 Y7 _
<statement sequence3>;
% n3 N. v* I8 f7 N$ r" w) |end;5 F( p7 ^! W( K) I- `3 K7 I/ |, o
( r5 L, F5 e. V6 t7 p# h- b2循环语句
$ p" K d4 ?* O0 | (1) from <statement sequence1># u$ a9 u9 S4 s8 M6 @) G
until <condition> loop8 Q6 _8 Q& C5 T
<statement sequence2>;3 T7 u1 c/ S8 p, q) _1 h& h
end;
) \' O5 S2 R1 H# ?- D0 E5 U. M5 r (2) while <condition> loop
. c) a% j5 T1 h7 e <statement sequence1>;
1 _% j1 Y# B; F: F) ^3 ~ end;
! _0 x: P3 T/ Y2 F (3) repeat
% s" u1 ~ V" _( F1 ~$ }' r <statement sequence1>;
9 }% a0 Y' R; n+ j( [& w7 P7 d until <condition>;
. L W; f' Q* S3 o (4) for <condition> to <condition> loop: `; N/ `8 |( s0 u8 ]* p/ d+ y
<statement sequence1>;
8 _& C3 C& q6 c next;! v9 i/ c% Z$ B+ Q" \
3中断语句* x8 g4 P: i6 {' i# P# L [
waituntil <condition> prio <integer expression>;
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以上为常用的函数！2 N& V! ~ G% _$ W3 B
还有很多，如有需要我把资料发到你邮箱里 ! y9 b, ]! j: I
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