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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
5 G/ D7 i$ N/ t0 e. z% r if <condition> then7 Y5 i$ F4 `, B* m/ m# S
<statement sequence1>;
c# E, c1 p4 t! d6 V elseif <condition> then& A0 _7 M! F1 Y8 k
<statement sequence2>;% D& `3 @- P3 i: M4 O$ S
else
# N2 Y6 G# ~- d3 k6 v$ y- d4 m$ B <statement sequence3>;6 E" c" t2 ^# o) r5 K; p
end;
! M( H9 b, Q) M: x9 G9 G& ?如果分支比较多，用：9 F2 o( ]9 P3 b) \
inspect <expression>
3 I, v3 M8 _) R( |% Q( L( @ when <constant_list> then
- `: M) a% g0 N8 _( I& W L! C <statement sequence1>;8 o% P4 z ~' Y* Q. b
when <constant_list> then' A1 g# v8 h# O8 Z" A& f
<statement sequence2>;7 \) Y, G5 T Z6 C2 q6 O0 T- a
...- j8 D" x$ S) m" c: V0 e6 o. C5 d' ~
else4 D( ]# h, E9 k! v2 l% j5 V/ N. s
<statement sequence3>;
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2循环语句( ~6 c' y" R3 D9 H6 ^! B
(1) from <statement sequence1>
0 q1 A9 }- _# ?8 l- ]+ ? until <condition> loop
% B5 i6 f0 \0 D T% d# N0 c <statement sequence2>;9 y j: O+ H5 i7 A6 I. I; q9 Z
end;
% H3 G" P, L' }% H# M$ t6 L1 ^ (2) while <condition> loop
: r: w' m& H j8 k7 Q <statement sequence1>;
v% ?& K# _3 h E `; `( l end;
* |4 x% y* Y+ C$ c. \3 W3 Y (3) repeat
2 I4 q2 b0 W; }- K1 u/ r) a <statement sequence1>;3 j) F- `+ s* u3 h: p v0 }/ _
until <condition>;
5 ?" U5 j, v l, I7 B, c+ a4 K (4) for <condition> to <condition> loop
' E8 ^7 M: @1 J+ w2 W" Z4 O" K5 F <statement sequence1>;
8 ^) E# R+ e3 I% p/ | next;
3 y# }" ^! _2 r0 p4 A3 j% C3中断语句
1 p/ E6 K! N9 O8 _1 i7 G waituntil <condition> prio <integer expression>;; F$ l% ~$ Y0 h. A6 Q5 o) Q
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以上为常用的函数！2 {% A5 w3 t- ]6 l# ?' c# n
还有很多，如有需要我把资料发到你邮箱里 ( | b' m3 p% J s; L
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