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发表于 2012-11-13 08:48:12
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1判断语句3 t5 j. c7 i L9 M. I! u- A8 L8 r
if <condition> then
2 B& h1 Q4 l: Z <statement sequence1>;) m/ z7 t5 y, U6 }% O- D: c
elseif <condition> then% ?; g7 q$ J3 I( c) P) r" q4 k
<statement sequence2>;" {- X1 F5 s% N0 M! l" B" l
else
# R- {9 n( g- }2 I% O <statement sequence3>;. H; S3 ^: o2 C8 A& i
end;
$ k9 X, u( F5 K: s+ y如果分支比较多，用：
5 u! S$ o* O6 ^0 \, D" `: K' q inspect <expression>+ o6 a+ O- L, k$ p. Y) b$ Y# N* y
when <constant_list> then0 N' g* n o7 h9 }& j, h* d* D
<statement sequence1>;, K7 j h6 b# a/ @- y1 I9 P
when <constant_list> then
! l( N& g6 e( P, k <statement sequence2>;8 o d7 D6 L9 }* _/ l
...; ~- W1 h8 z) r; T2 @
else
; a O. k( F6 z. ^3 W: | <statement sequence3>;
) G' [, c4 g0 x& P! e& ?end;" H+ a g) m6 c4 X
" j. H" H/ w! I) d* v2循环语句
- M- c7 X3 Z6 y4 G5 S. A. u; C (1) from <statement sequence1> ^9 {) {6 g( b8 O/ Y" D+ `
until <condition> loop
. I. q. c! Z" { v& b <statement sequence2>;
; G/ ]! m+ v1 b) w, D7 E$ m end;' Q* u2 C" R4 Y1 r( {8 _1 K
(2) while <condition> loop+ Y; y& v, o! i9 _9 n& p* f0 e
<statement sequence1>;
, [9 {2 v& _# M" }* b) p. x end;/ S$ i! `- J2 `1 w2 |/ U
(3) repeat
4 p! R2 n9 O, x( U" R6 O% k8 m S <statement sequence1>;
0 h; {: g2 J; v% j$ L& d' k$ X until <condition>;
! k) N/ V" o h (4) for <condition> to <condition> loop
5 G+ ~/ L2 G; \3 W! | a7 X <statement sequence1>; }% m! n C8 j
next;
" K1 q4 ]& {$ r+ {) F1 B3中断语句* n2 D5 |$ {+ |( w& A8 A
waituntil <condition> prio <integer expression>;
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8 J0 k- B3 _4 v以上为常用的函数！
7 b3 {4 y( X' P4 r4 a0 |0 b还有很多，如有需要我把资料发到你邮箱里 $ g+ t5 u& p/ M* ^- c5 T7 q
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s+ a6 K+ R# h3 C; S! h% ^5 k6 A4 f4 ?
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