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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
4 K% u4 O# F/ A0 [) H n3 X3 B if <condition> then) ?% V* c9 L9 b& a; y$ o
<statement sequence1>;$ \# q1 W2 z; l2 z
elseif <condition> then
" o+ w. q* h( Q4 [8 B( [- e <statement sequence2>;
5 ^6 o) t0 @) {3 t4 J' Z else / ?" H* f0 }, P8 m/ d. w
<statement sequence3>; D) J7 m8 A: a7 p5 L
end;- u9 E1 G; u8 d* {* a- x& L
如果分支比较多，用：
- \( K' a' C7 Y inspect <expression>0 B) a8 ]* b6 A# ~1 j. Y
when <constant_list> then! o) K6 V9 o/ Z; x: {4 _: v% U
<statement sequence1>;1 g; F4 n& m5 s8 p4 r
when <constant_list> then4 o& I: |5 d- t+ T: E* ~
<statement sequence2>;1 @- \+ T) @; l7 r" ~4 Y
.../ G: l( A$ ~: f# I3 [8 Q) Q
else% `7 g2 u; y, x; K
<statement sequence3>;& w# N' k- T) o5 Q$ a' [5 P* X
end;' e9 ]8 L& D2 p: B3 D1 S' y
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2循环语句
- `% v5 s8 N$ p/ S" E (1) from <statement sequence1>0 K: t6 c; Z- ]& h- m! n
until <condition> loop
9 \3 b; {$ v0 }- Z5 b4 d% c <statement sequence2>;
# @" n# A1 `3 S) G: _9 w' F end;
0 ^+ a" `% ^$ c$ p (2) while <condition> loop1 z1 M4 k9 A, K: Q
<statement sequence1>;7 I" Z, A2 A0 I
end;
/ h+ P5 k# z' Q- w1 f' x: S' g, m (3) repeat . ?) s, z/ D" D( a8 x% f, p( e
<statement sequence1>;3 T: I" z+ r. V6 n; H
until <condition>;
0 h( K" `1 u! T2 Q1 E# y8 o } (4) for <condition> to <condition> loop) e2 u7 S/ J3 q7 Y
<statement sequence1>;7 g1 n; [3 G5 i* V
next;! g7 A. k9 k# ]7 u4 A$ ]+ D
3中断语句
$ \0 O( \* b+ P4 j# i! @, g1 R& t waituntil <condition> prio <integer expression>;; T& ?9 }, k- o( m/ U# G/ H" D
) R4 ?; Z7 S2 g, A9 Q% v' c8 J; q
8 q0 s. ?. P1 ^以上为常用的函数！; _4 ~/ g0 i; F6 B/ e" |3 g
还有很多，如有需要我把资料发到你邮箱里 - @4 c5 M# g9 M% \
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