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发表于 2012-11-13 08:48:12
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1判断语句
1 r7 U% A1 P, j0 o" M if <condition> then
: h7 {& d* i% W F/ h <statement sequence1>;
" W( M7 k9 ?) n2 F5 v: N1 E" J2 L elseif <condition> then5 G# L m- @- Y7 T+ B+ a2 S8 Q
<statement sequence2>;
% i& `" X' h- L8 f6 t- n, W else
: m% X' ]2 j$ b. g4 y6 U <statement sequence3>;9 J' {0 a8 K% B1 \* {" ~
end;
. p. i0 |$ | s" X o3 V% m: u* _如果分支比较多，用：
7 \8 t9 \6 j" F9 X& p inspect <expression>* ]. s5 J* i: l! z) k# c
when <constant_list> then# @0 b$ y* d5 n6 V: a) O
<statement sequence1>;
_$ k3 m0 U/ t when <constant_list> then' l' B7 A4 w1 T& |! R3 T. w' H8 L
<statement sequence2>;
9 w% M7 R7 }% h5 U ...
- w( f+ b' u: E! D2 M* {0 Z else
' S9 N: x# a% R; H/ v <statement sequence3>;
9 z; e6 Y* r3 S3 i: s! iend;
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. ?+ o3 u7 R7 P4 {* `# t2循环语句
1 | O0 B! {1 {* D6 L (1) from <statement sequence1>0 ]$ E$ U' d- F8 y- C% a
until <condition> loop$ j. i+ ^7 s! q- F
<statement sequence2>;
* J9 M" x( R: C/ T) E end;
2 _; {& T: p6 g' J# H; s: D (2) while <condition> loop- g8 [5 n' h0 m& L2 T5 H! B7 J
<statement sequence1>;
9 O4 q# w2 v! m3 o end;
3 [4 K4 Q$ c# Q) O" A" L (3) repeat
7 Z/ k$ n+ r" X, b) \. x# n <statement sequence1>;4 k" Y' U( X; P }5 P! D
until <condition>;
% `. b0 U7 c1 ?9 a) [1 y (4) for <condition> to <condition> loop0 @5 w" G$ ]; `% p4 i
<statement sequence1>;2 Z4 }: g$ J: p5 J/ L
next;
6 j7 C& {5 J3 x! M0 P3中断语句
- x! i8 @. M( w6 P' H2 E- X waituntil <condition> prio <integer expression>;: a$ }# g8 l: G
$ Z" [2 i2 J, R8 I( P1 H& j) U8 A
7 d6 ]+ Q" v% C5 R C4 t& y以上为常用的函数！, `# b' w; I/ m" C! X$ G
还有很多，如有需要我把资料发到你邮箱里 $ }1 u# u" V8 ?( Z/ d" h
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