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发表于 2012-11-13 08:48:12
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1判断语句8 j0 A9 L3 B+ P' H: K5 {: ?
if <condition> then
2 d O# F: w& \6 U! f <statement sequence1>;
& X+ O/ }; j# G2 L k elseif <condition> then8 g& S5 v7 M- e4 x3 N3 K. ]' W
<statement sequence2>;
4 r4 |% S2 I. f7 t8 d else
% H, g; P! j: H9 p6 ~1 Q } <statement sequence3>;
) N$ }( d& u" }5 ]5 [1 E) N end;
9 ^0 I: C4 B/ J, G, Z2 J如果分支比较多，用：
% K2 l+ l( }8 O) q inspect <expression>
/ Y# `/ u ]/ _5 z when <constant_list> then
# P6 r# R4 S9 r7 v5 G <statement sequence1>;
/ n3 H L, p& A when <constant_list> then7 u+ \. @5 _* {) W' p |
<statement sequence2>;7 m: w( Z" b0 Y: p
...9 q K/ d1 H. |% L& J
else
8 Y, S7 R: j6 q6 {% }# O <statement sequence3>;
& p" k$ |" B# `6 B, K+ H+ Tend; ?# u: \) b! P
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2循环语句
" x8 H/ `3 _8 [* Q (1) from <statement sequence1>1 t2 O8 C/ q. |5 P# L. _ ]9 i# p
until <condition> loop. I2 p6 q9 I; u3 S. b
<statement sequence2>;: \& w- F! x/ ^; z4 h; x
end;; `: ?9 L x& D+ J( k* ^8 A
(2) while <condition> loop) c) n+ c2 p: i1 O$ I- _8 c
<statement sequence1>;% _% i+ z8 m* y. l8 [# C7 a( J- N
end;+ [6 Q, |7 T7 t, a \' _
(3) repeat
8 A+ m, d; }" w& B4 ]6 u, q <statement sequence1>;1 F9 R" X$ e) w! ~4 ]6 Z" P3 d \' L3 O
until <condition>;
# J6 W( U3 P3 t) l( \! w `: i (4) for <condition> to <condition> loop
( x6 s6 | u$ W- r <statement sequence1>;# Q) [6 F3 o" ~
next;
5 {2 R1 A9 k; N9 L: b2 W3中断语句
- M! P& s% @ R. m8 \ waituntil <condition> prio <integer expression>;, \% J3 F! @- n$ I! e# j
5 C& t/ Y6 z9 a& [! y
) q) C: N" D, A/ C以上为常用的函数！5 l7 C6 ?2 @9 J/ z5 z5 I8 V
还有很多，如有需要我把资料发到你邮箱里
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