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发表于 2012-11-13 08:48:12
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1判断语句2 Y4 |6 c2 [, F6 K8 Y
if <condition> then1 }3 w: z$ Z7 z1 |. {
<statement sequence1>;+ S+ Y; ]7 d b& l% x
elseif <condition> then# U- O( Q7 L. j, U% ?% L
<statement sequence2>;
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<statement sequence3>;) k+ b E* n8 p! f2 U
end;
" ~/ S! d' B5 B) W如果分支比较多，用：
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when <constant_list> then- ^/ S, h' \% C+ t: M" A
<statement sequence1>;
- \# a5 m; c: j; N5 F when <constant_list> then
2 f5 p5 \3 D8 v/ f$ l" L <statement sequence2>;. g* Z& a2 M6 q
..., V2 ?8 Z5 s4 K9 @
else5 L/ f( R8 N" c7 s+ d
<statement sequence3>;! e) W3 ?8 I% B
end;6 C& U! @2 V9 b9 r) S
, B+ M L: P: ^7 {2循环语句. T- S0 P; h! `0 z' ~6 b; p( F
(1) from <statement sequence1>1 O* z) A& k- P5 q* d8 y& i
until <condition> loop* F; h5 Q0 s4 N' j5 R2 P
<statement sequence2>;
( }$ Z A' ]! p$ y1 n end;
/ z4 \! J5 S+ u9 M (2) while <condition> loop
, t; F. e- N; G( V# P <statement sequence1>;5 K) a- W; ]1 K, j
end;3 ^ ~# f# L+ ?. O9 |
(3) repeat 9 ^3 d+ x7 {7 q$ Q- `' P, ]
<statement sequence1>;
4 l+ J# C7 V4 w until <condition>;3 m6 I& D9 _( v9 v1 p
(4) for <condition> to <condition> loop3 }! J: R6 \4 n: Q! r* k& b
<statement sequence1>;
2 @1 m5 u0 D# U8 x next;4 O7 t& n9 v1 ~% y. R
3中断语句' P: z( b8 h- X' B
waituntil <condition> prio <integer expression>;
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以上为常用的函数！
~' _# ^6 | @( u* x' @6 H& }& U1 Z: e还有很多，如有需要我把资料发到你邮箱里
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