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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
' s: s6 c; T0 w8 H if <condition> then
' @* M9 `; t* W <statement sequence1>;
* {/ w# g d. X8 m4 V. S. ^ elseif <condition> then, W. m9 H- f; ^: I
<statement sequence2>;
+ h2 a- M: x2 _ ?! o else
; \' \. U& c/ r- Z <statement sequence3>;
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如果分支比较多，用：, U+ V( N5 r; Z! G2 g% k6 W4 ?+ o) f
inspect <expression># w W& k+ T. b& D. }- O
when <constant_list> then
, U; h& `/ z6 n7 t4 `- H: G <statement sequence1>;
5 x6 o# P- f9 m1 F1 [& ~. l/ P+ [ when <constant_list> then! c4 q. P4 X) O5 V8 f8 o. w
<statement sequence2>;: d1 ]# U' j% y( }! G
...8 K" g0 m3 c: ? H9 v
else# H8 s% s ?* f" v9 A7 I% y* N
<statement sequence3>;$ c9 @1 M- z: i7 j) k3 n
end;/ q/ B$ v( Y$ e0 N, r
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2循环语句
: o7 T3 }3 H. M- d1 ~& ~ (1) from <statement sequence1>9 k2 A( B: E3 x3 H2 x# k# H* j6 m w
until <condition> loop
) ~/ H% c/ F6 F4 m# O+ y5 ?' q <statement sequence2>;
! l5 }. ]9 D/ G0 c4 H7 ], k% X end;
, L8 R( a( i2 i0 u+ l (2) while <condition> loop) S# ~# o" _1 K# z5 Q
<statement sequence1>;
5 \4 ^' B9 J2 b1 ] end;( g* q- O- ^; z1 Q2 T- X, l
(3) repeat ! P; i9 Y* F4 n+ ^+ k4 [
<statement sequence1>;
: o( n6 c7 G2 c+ J5 r until <condition>;
" x3 t; V2 G3 D% M7 c' W (4) for <condition> to <condition> loop
) N; i l0 J) S) c; |' w& r <statement sequence1>;
6 M' S2 d$ a: _; ~) g4 J next;$ z* m+ x1 f* Y$ K @
3中断语句5 W- l* {( g! L% y7 m# ^
waituntil <condition> prio <integer expression>;0 S- g7 _1 ^- t4 V
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! c3 l' a4 E1 L! ]) U' ~以上为常用的函数！
+ ?' N5 J" g/ W7 Q4 ]还有很多，如有需要我把资料发到你邮箱里 " P4 M, d+ E# F; j2 Q/ {3 K8 {- j6 D
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