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发表于 2012-11-13 08:48:12
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1判断语句
- W$ ^/ p" o& Y if <condition> then
6 Y1 l: u6 c* i/ T7 [+ j <statement sequence1>;( o, v$ f1 x% t/ S# i9 {) O" t# M
elseif <condition> then
: y% J1 b9 L6 Z+ t( E) Z; ?* s <statement sequence2>;/ G6 u& n# ^1 a1 L
else $ u) }7 t* J: e) R1 x1 e
<statement sequence3>;$ I0 ~. X9 i, e V& w# H9 ^4 k) A; H
end;0 a) G' X/ w. x" b- q( f
如果分支比较多，用：
% C0 s9 W* j) v" u+ j4 a/ w. g inspect <expression>" A. y& q7 w+ Z q
when <constant_list> then5 u! J# j; W/ G3 N
<statement sequence1>;
6 m# ^/ [- w" ~9 D$ N5 o/ p8 [ when <constant_list> then* l# @/ @' q, r9 e
<statement sequence2>;1 P; k; z9 l+ D9 Q' Z
...
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<statement sequence3>;
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2循环语句' N" x# p7 S7 ^! U
(1) from <statement sequence1>
7 n/ V% A4 ]4 h" [0 q/ g6 O until <condition> loop
& ^( N0 F* m: z* A <statement sequence2>;
b" Z' y+ {* i) a' Q) W/ | end;
8 H. ^/ w( m. q Q1 N8 t1 ` (2) while <condition> loop
8 |# G4 _ o; o" z3 j. O8 L <statement sequence1>;
1 P3 o5 Q0 b o x, }: f end;( q* \7 M1 p. y, s
(3) repeat
0 S) M5 M! h { <statement sequence1>;/ [+ Q/ H% @$ P0 ~5 t2 y
until <condition>;" y9 G* A/ _; e( a% x" [
(4) for <condition> to <condition> loop
4 M- J8 ?* K& P- ]1 T <statement sequence1>;6 x0 z$ |: Q" ~2 y+ I% ?1 S
next;
& v! v0 T% a8 Y9 C2 m$ C3中断语句8 i. e& u& O8 Q0 y# Y+ f$ _
waituntil <condition> prio <integer expression>;
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. r1 m6 r1 j% A1 H6 I" W5 m以上为常用的函数！
* l" J, {2 P0 h: _/ L1 E$ o1 J还有很多，如有需要我把资料发到你邮箱里 . n! m% W* n+ y9 y$ i
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