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发表于 2012-11-13 08:48:12
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1判断语句& e" W/ {8 X6 D9 O0 m% J- x) A
if <condition> then) P ]/ j0 Z+ X, ?- L0 R& I
<statement sequence1>;
2 z; Z+ ?/ {- k o! R elseif <condition> then
6 b9 d l6 l1 ^% d* P( C8 d <statement sequence2>;1 u! I$ i, h8 Z
else % N, V2 J- m$ y
<statement sequence3>;
% A- D! H2 }# e3 x: m end;
% y) v3 S: K0 O0 \如果分支比较多，用：
/ i+ F3 A2 R3 B8 ]4 b' t" G' l inspect <expression>. B1 I, B$ K6 g( d" y
when <constant_list> then$ d' U+ {( j0 z4 U8 R
<statement sequence1>;
- y5 @" t) H9 v8 u. P3 D) ] when <constant_list> then
7 M2 `: B5 K& b <statement sequence2>;
7 V4 p u5 ^) g. j ...
4 _' K2 r- z- c! q2 v else
& L6 ?4 J3 S& c% _: @' p <statement sequence3>;) P. R, B; b3 J4 `
end;
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2循环语句
' k$ v5 ?0 l0 b# a$ L( d (1) from <statement sequence1>
% `) q ~& `: O9 L' g until <condition> loop
0 `* Z3 W% T3 Y/ D8 [2 t& [6 k: I4 k <statement sequence2>;
; j; Y C) u: j1 Q6 X0 m$ ` end;
8 a* _$ K; B6 d0 E4 i (2) while <condition> loop
" K6 `, b- E( B! k% | <statement sequence1>;+ _: O& H% b- C* j# x( g
end;
, {9 L& h% t8 S4 P0 f (3) repeat
+ F* o. a& N. Q/ h9 b+ Q <statement sequence1>;- C+ e- o9 F, @0 j% B2 s! S! I. ?1 _
until <condition>;& h0 Y$ V! f4 c6 Z2 z: H) k( |
(4) for <condition> to <condition> loop W J" P; y$ l3 o+ L. T8 r
<statement sequence1>;
; y, Z7 H$ p5 f5 Y; u next;# A& W$ `) W8 a$ t ]$ y
3中断语句
7 N, h; b. i+ ?3 m7 [& y waituntil <condition> prio <integer expression>;& p+ X$ N1 J$ {
N7 H0 K$ {( p" P: Y) B
/ k; Z' e: B- \/ r0 \& f以上为常用的函数！
; l3 A1 m0 ]* @& n# ^还有很多，如有需要我把资料发到你邮箱里
4 t) }1 l! `4 r( Q$ U" }5 h2 E y2 n' m1 c; T0 q d
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