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发表于 2012-11-13 08:48:12
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1判断语句
- Z- c9 g! w( ]8 ]9 h if <condition> then9 I* H. G0 _# ~$ U% ~
<statement sequence1>;$ s. M" x2 u O5 W
elseif <condition> then
0 A( W4 ^5 [" W& E <statement sequence2>;; M8 a* g- [) e% p$ F
else
' H& D- C& R7 U' m8 u <statement sequence3>;
& [( `( h7 g; S, j; O7 n, H! B end;
* E1 C6 u: j" q+ K/ ` C2 k M }' S如果分支比较多，用：
. |- F' A/ |& }1 i8 k' V: N) L inspect <expression>. E! A6 h& ~) I
when <constant_list> then
6 L$ q0 v8 H! r, d( A4 z4 A. @ <statement sequence1>; p" @0 u2 P4 f; `1 k# S
when <constant_list> then! ?( T7 @2 [' z: A+ z1 X8 J
<statement sequence2>;6 J- J( y7 u; V* i4 V% z
...
" B: l; V9 X0 x+ Q- [7 N else
, r7 H8 u& j! l% W <statement sequence3>;1 a; Q; D& r, w, |: B% ^: E A) A
end;' F; H# n: {# C1 j x
' R3 S: ?# C3 |3 Q2循环语句
: R; Z, c0 V# M7 ]9 B& O) T/ N5 P (1) from <statement sequence1>. ^+ X3 [" {5 K- n" Q* ]5 N
until <condition> loop
1 t5 |4 ?" ?% G( K! w7 U' z <statement sequence2>; i1 a! h4 Z' _( ?1 c9 Z0 A9 v. P
end;' k8 j& X- u1 {
(2) while <condition> loop# W- @2 V) q ]" V+ z6 o7 f
<statement sequence1>;: T; A7 ]3 ^7 V. O! H+ m# q
end;! ~8 W6 Y; N; B- ?3 |
(3) repeat
& L! B% P, R; [: ]7 ^ <statement sequence1>;
, ?# E3 H. \% w7 V, W; j until <condition>;" a$ b4 ~5 l# ]6 C
(4) for <condition> to <condition> loop! q2 i/ `) t: `# d* I$ P# P
<statement sequence1>;
6 V( T$ I7 F2 m5 L" g next;
) |8 M9 n4 R% h$ I3 ~3 s, p3中断语句
. l9 C4 Z* D4 ~2 X. H3 l/ d waituntil <condition> prio <integer expression>;
; G/ q. I. ?; b# d. B ]& ^. m- N* G; f* v7 j4 Q
2 N' F' U7 D% h& `7 ?2 t% i
以上为常用的函数！
. c* B) k: a. ]: W5 i0 ~- E还有很多，如有需要我把资料发到你邮箱里
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