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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 f$ R7 ]2 r+ d( K) w. ]2 Z
if <condition> then
) ~+ z$ w# a- J/ O <statement sequence1>;
; D$ |9 }0 _1 [1 ?4 ~" _ elseif <condition> then
$ R9 a; C: O# S <statement sequence2>;$ X7 q) s) Y; A+ W9 y, {
else
. o3 s# t! r! o# d/ M5 R <statement sequence3>;7 ~* C$ W: ^( w$ j$ S3 V' b$ K f
end;5 @' n$ V) Y& @, o
如果分支比较多，用：
- T' O1 x. X0 I( o V/ i8 Y inspect <expression>0 |7 V& C% E, i* w+ J9 d0 r( z
when <constant_list> then8 ] C. |8 f6 I( N
<statement sequence1>;% h3 b: D# e8 S# n$ M/ z! T
when <constant_list> then% c5 O" w% e+ v1 _
<statement sequence2>;
$ B7 ~/ D3 r; q5 _, A8 N' B ...
$ ?0 `) ?3 K7 [+ d: ]. F else& F" j2 ~( s) ^# `
<statement sequence3>;
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2循环语句
% U2 B9 s: U8 m' w, f; ^ (1) from <statement sequence1> o/ [$ N3 {0 @
until <condition> loop
5 D& G- @8 a6 n7 _ <statement sequence2>;% k/ w4 W$ O0 r% l0 R$ [' c% }
end;8 p; h* |2 C/ {' i5 T; L
(2) while <condition> loop/ @7 l" N" Y) Y5 O! ~
<statement sequence1>;8 V0 o* Y l$ V" e
end;% i+ ]' R" T( C& U
(3) repeat ( |: s( M" S0 n3 h" Q) }
<statement sequence1>;0 _& a' \6 Y9 v* S) L+ F; G. O
until <condition>;& J- C( G0 }) n; a& \- e
(4) for <condition> to <condition> loop
7 u. i" S$ \4 B3 O5 G- J <statement sequence1>;
3 Q- O0 R- h. J$ r next;8 ~; x9 o! r3 Z) _+ v |
3中断语句
# V( y- D0 ?1 O: i+ }- G2 F0 b waituntil <condition> prio <integer expression>;
/ i2 ^& g7 w J) I' i3 E$ {
5 } P$ k" N2 g1 [! ^
( Z* A: c$ ^" o6 ~4 [以上为常用的函数！# B; Q2 A0 _( f R/ [, r
还有很多，如有需要我把资料发到你邮箱里
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