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发表于 2012-11-13 08:48:12
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1判断语句% K) E- }4 i4 |4 |( J$ `
if <condition> then0 d3 O/ \2 [& X- l m/ ~
<statement sequence1>;9 E* E* G. ~, }! _6 B6 s. h
elseif <condition> then+ J5 ?% Z+ k2 F. y0 g
<statement sequence2>;
9 G; [2 a( N& m" ]( n- P: R else # P7 V8 w8 z2 S+ X9 q' e0 a8 Z2 q" {
<statement sequence3>;0 X8 ~. r1 C' k R; G
end;
5 s" n2 U, ], j% u5 \0 L! U如果分支比较多，用：
' H5 U/ f: K6 h+ \5 T0 ?7 I inspect <expression>6 V2 M+ P2 }( l9 c/ |6 H
when <constant_list> then
/ c8 v; h7 h: r4 d% v% [ <statement sequence1>;
( _% a( \2 f4 X when <constant_list> then
# v6 `) Z) E8 `4 _. i% g" q <statement sequence2>;
* v/ j4 I( S1 i0 Y% z ...
: c2 s1 a7 v# [3 ]0 \/ X: q* I else
1 }5 J2 l I* ]+ k <statement sequence3>;* P" S' \, a4 K
end;
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) L3 v w( ^5 F5 | g7 G: y2循环语句
% y5 Q; G |1 Y6 G& m (1) from <statement sequence1>
6 p2 F, L1 F# o& [% a( p" A6 n3 H until <condition> loop
/ j; f* n: }7 L$ P <statement sequence2>;
' ^' O4 @& s/ D; F. b end;
6 W6 p0 [' a% e$ X4 z (2) while <condition> loop
1 D, w* W1 a& O+ L <statement sequence1>;0 b6 I6 S$ X# L
end;# j- Z+ b+ @) d4 ~( c4 e6 K
(3) repeat
5 Y9 E, e, R9 B& a) Z' K <statement sequence1>;2 ?. }7 T- X# h6 l
until <condition>;5 G, g! _2 B; D! P
(4) for <condition> to <condition> loop' q5 F, F: `0 }/ _! W, O
<statement sequence1>;( I' Y6 Z k3 [5 X8 M+ {" W, ~5 u. M5 w- j
next;$ `. o+ b. Q7 o2 c' S3 {
3中断语句
5 c: h$ N1 `7 k3 C% o waituntil <condition> prio <integer expression>;
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0 {; p2 R" ?# B( P$ C
7 k1 G& ?" `( u8 S5 ^, R以上为常用的函数！) U6 E7 j# J! _) M9 A8 t3 Z
还有很多，如有需要我把资料发到你邮箱里 . U! W; D- i/ K& f+ m% [4 a
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