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发表于 2012-11-13 08:48:12
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1判断语句) ?( K7 F$ k- _5 e4 u8 u
if <condition> then
" |! C6 ^$ l. R4 Q! U <statement sequence1>;/ }5 C* r) C3 O9 Z2 K/ z. v+ _
elseif <condition> then4 `" k9 c; `* x/ R5 m
<statement sequence2>;9 a4 g0 I' P1 j+ C- I, w
else
! o/ E- L& O4 v( k+ C; i% [3 E <statement sequence3>;
- K- b, r+ s2 N7 o" `2 q8 n end;
! X# p" |9 x8 q- q如果分支比较多，用：
+ _# I- x, z5 z" v) ~5 ? inspect <expression>
( }- _" F3 q" F# Z% h; f when <constant_list> then }! T* a# C9 c/ |6 {5 l
<statement sequence1>;
. T( u" d2 E8 @! O when <constant_list> then7 R' `" |( h8 M. }7 \* S9 n, ?) k
<statement sequence2>;
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else9 g( q6 t9 U6 W% M
<statement sequence3>;* y, d+ a8 m8 |7 @
end;
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0 ~6 W& d& C7 u5 e1 T- w. q2循环语句
# ]) g3 \+ B6 f7 k (1) from <statement sequence1>4 o3 i0 n1 T# o' O
until <condition> loop
5 K; V3 a0 u2 m1 u1 Y <statement sequence2>;
4 l& s' @3 g8 |( n4 [4 V. D end;
; C4 _$ o5 C: e4 J+ w1 Q# f2 {6 ]* q+ U (2) while <condition> loop
; _# f5 U3 M* Q s a G <statement sequence1>;* e* g8 ^3 K* A* i2 u2 ~
end; m/ m4 h9 }2 W- }8 [% w/ B1 \$ y' r% f
(3) repeat ! m0 {1 O4 a5 H" g, c7 g0 x }3 X2 f- R
<statement sequence1>;
, F% K- e% A1 v9 L until <condition>;
9 g) d1 i( \9 C0 N1 } (4) for <condition> to <condition> loop. m' |2 K$ G: F, X* r
<statement sequence1>;6 b4 B; v1 S' ~8 a/ F
next;
* J+ Z" ?& c! U: M9 c' M$ P8 ]3中断语句
; P9 ^1 g: g1 Z waituntil <condition> prio <integer expression>;3 Y% _' s: J3 |; U
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# |: S' s- N) S& ^3 v' E) [7 C
以上为常用的函数！
" H$ j# I8 p+ r- y6 k: o还有很多，如有需要我把资料发到你邮箱里 9 a3 ]' v8 \; C
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