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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
9 Z" t# @# T8 W& H, F6 q! A if <condition> then
1 S% V$ ^7 @% y. m, ` <statement sequence1>;# u9 v6 b ^) Z4 i
elseif <condition> then" V4 ?/ x, Q3 H' B F# s O
<statement sequence2>;
+ k$ f3 A- }* E, j else 1 F! f7 o: H! @9 j8 K6 b* T" d v
<statement sequence3>;0 K0 C; y+ B% C3 E1 A7 r
end;
( K$ v( p! G! k- h/ H7 P如果分支比较多，用：
/ w4 l W4 Z; c/ y9 s6 N inspect <expression>
8 Z1 V; \5 n) q$ o1 L0 b8 A when <constant_list> then5 B6 c0 @; _7 W
<statement sequence1>;
: j6 i% t, E/ c7 r3 O when <constant_list> then
- p; X2 ~% W% f" j8 ]2 s4 ], ^6 r, J <statement sequence2>;
0 [; q& C8 E* Y E ...
: _) P6 G# E3 M' p! D else+ R7 n, w7 B2 s% L
<statement sequence3>;
7 v6 h% d# f) u1 y; X" S9 B# X/ h* xend;8 M3 M6 ~1 j h f% J8 B- h9 d" ~* F& s
: b \$ C, p, ?0 d* w2循环语句; W3 j: O3 X# U$ Z2 j2 g: Y) N
(1) from <statement sequence1>
5 v3 V( m4 _9 l3 q until <condition> loop
8 [5 g0 v+ S/ H) R <statement sequence2>;
2 |; [% l0 E+ C. U9 ]/ G7 \9 C. t' c, p end;, X0 u! `& k9 X
(2) while <condition> loop' G& y' r! f! P
<statement sequence1>;. }/ {! k4 \ y% e- S$ X! h
end;
3 ?# [% [* a% x- G (3) repeat
6 A& _$ w) g8 A8 ?3 L <statement sequence1>;2 d, Q4 C- _: H) E
until <condition>;* K5 h9 P; W, \3 `* P1 w
(4) for <condition> to <condition> loop, {1 m3 n, o3 h& K1 Z8 E& z9 q
<statement sequence1>;9 q, ]9 u, K% N' [2 C1 D5 I2 |" q: O
next;3 _4 K5 E8 s% \3 }* F3 Z. A
3中断语句
) B: }$ O; M8 i1 ]6 s waituntil <condition> prio <integer expression>;
1 i2 G9 _7 @9 m6 `' w) R! }
m" X. ~$ N* p$ R D6 j$ {* P- h! w7 o1 @2 k6 G5 s1 W5 p
以上为常用的函数！
6 K( X! u7 {5 u) V还有很多，如有需要我把资料发到你邮箱里
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+ i' C1 G4 x4 Q7 W) H% q
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