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发表于 2012-11-13 08:48:12
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1判断语句- c' {& Y2 a4 E. a- Z6 O
if <condition> then- Q& b% e% Y% d" |
<statement sequence1>;2 E: B7 |9 D+ k; b" A
elseif <condition> then$ m! m0 p9 D, X: G. K
<statement sequence2>;: U+ j2 K7 c, ^! T3 K% ]4 D
else
$ s6 {. [; K7 @9 Y7 I& Q <statement sequence3>;
+ J' I7 D1 O$ W2 m# o4 C end;
/ L7 Z% L' A- B0 j如果分支比较多，用：
2 u/ t# A& v; s- W' z) E: ? inspect <expression>) |1 K% J; _2 f2 U
when <constant_list> then
3 P4 {9 C8 C7 Y" \& N <statement sequence1>;& o+ C7 h" Y. e) L) m. ^& t
when <constant_list> then
& w! P) Z, a! }1 w <statement sequence2>;
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else
5 S/ `! ?0 U: t9 m8 j, _ <statement sequence3>;
! v6 A9 q1 {2 o9 g3 g* yend;. A3 E! ?3 F/ ^3 m. O
$ k& u% e* S# p0 a' u9 n9 h7 T2循环语句
9 g- P$ P( g! F (1) from <statement sequence1>/ }! A! Z) u4 r( H
until <condition> loop
) K& M$ ?. ?) r8 Y+ R# @+ b, u <statement sequence2>;
8 Q. r0 L" Q. R6 k8 E8 \& P$ _& m end;
q( T( {8 D7 A6 R* x Z' O. C (2) while <condition> loop
% \: J9 v1 G: o- o3 n* U9 B, P2 G <statement sequence1>;
* Z* k3 g$ p' k! G: V end;! m4 A% u4 Q' w \; `; J
(3) repeat
7 h0 K; l8 I6 j2 |- C; l' P8 z <statement sequence1>;
5 L% O" t. [' a until <condition>;1 h7 q2 o [3 A- Z
(4) for <condition> to <condition> loop
7 t3 [, A; C) U3 ~* n6 e <statement sequence1>;5 b! D, I7 V8 u5 N3 a
next;1 C+ v5 c* E/ ]. K3 `2 w" [% a
3中断语句
/ B5 E# U+ H8 Q$ c) _/ T2 D% v! C waituntil <condition> prio <integer expression>;5 w. { L8 P8 g, @9 r6 v
5 \, e8 q6 h# X( }& R; X! Y
% T3 Z2 b/ _. a/ D5 v以上为常用的函数！
k5 R6 Y4 s4 G, _还有很多，如有需要我把资料发到你邮箱里 8 S* Z6 S! o1 r$ ^( f) U
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