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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
% Z) l- `2 k) ]+ I2 g+ ? if <condition> then
% \. d* M- H- y; Z* v4 r <statement sequence1>;
. D* I2 T( C8 k+ @. x) h% O elseif <condition> then
! R8 L$ j+ A/ C <statement sequence2>;/ T$ ]0 }& K0 {3 D
else 0 {& {$ P; i% u( v( o
<statement sequence3>;
% M9 Q; H. e! @8 C end;/ ?6 R% O- r' X+ p( i& _8 o; e7 T) ~
如果分支比较多，用：+ j' P7 Z' B+ }; D1 G
inspect <expression> T9 ~4 K' h* ?4 P
when <constant_list> then, q( M5 A* N2 R# j
<statement sequence1>;4 e: S/ i7 @! }4 o1 u
when <constant_list> then! Y/ ]: Z/ t0 C
<statement sequence2>;
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else% a! q" ~% Q# j+ H# \ R. h
<statement sequence3>;
; K; X8 @, r# o1 D2 {4 o6 h8 jend;
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2循环语句
3 I& `( L$ g- _0 p* s+ O, v6 N (1) from <statement sequence1>* ~. I0 c+ V8 l
until <condition> loop
0 ~7 B2 x8 s! }% l w <statement sequence2>;2 w% } z) t8 @: O' z
end;
0 ~' m$ b, i8 Y5 s/ p" B (2) while <condition> loop6 r2 ?5 D$ V2 \; u3 P5 C
<statement sequence1>;9 h) {" o! ~% o1 M: s/ D
end;
( B& ~* Z# c% Q, u$ Z2 c! _" c9 i: Q (3) repeat
. y/ C8 u' H4 a) m6 A <statement sequence1>;3 E0 _8 i2 ?) W+ T% [
until <condition>;
% \% n6 A F0 d* A% X (4) for <condition> to <condition> loop
% V7 q5 n2 M# l! ] _' d <statement sequence1>;4 C; A4 Q, J2 t& L2 ^
next;1 A" ~( b% R& k$ k% v3 D
3中断语句
7 M5 N. H1 ] v! ^/ j* y waituntil <condition> prio <integer expression>;
$ M$ X( o0 f o9 H- j4 Z
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以上为常用的函数！! v0 B! q2 M$ l0 S: E
还有很多，如有需要我把资料发到你邮箱里 $ Q5 F1 h" `( _
& [9 C+ E- G- s" Z' a. _* F7 W6 ^6 y o Q( C) J% o( T
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