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发表于 2012-11-13 08:48:12
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1判断语句
, N+ o* D* ]" O' y' G9 L [; L if <condition> then
6 v2 ]. |/ E$ k- a <statement sequence1>;0 `& c# x6 \ \, @6 ^5 E; P+ m% [
elseif <condition> then
3 I/ ^+ L/ D! `/ h <statement sequence2>;" Z9 {1 r1 j& N8 N) p* S# Y
else ' Q- a8 h/ y$ ~1 C* B& z5 c% o
<statement sequence3>;
/ ? X# Z8 G* q% \4 \) b5 d+ q end;
/ F% P3 m4 d% K如果分支比较多，用：
, J4 A, n# p7 l0 H0 l& O) y inspect <expression>
% s8 G- d7 Y( i when <constant_list> then5 j. P& v6 p: i0 V6 U" d
<statement sequence1>;% d4 y/ r; U. ]; v% w) a
when <constant_list> then/ y, f, Y0 y; |9 ~4 [$ A' y
<statement sequence2>;
- Y ? H8 U' x; F9 k ...
4 y9 N' I7 q% v4 D" u else
, p m2 M, O Q2 |4 u, i0 m <statement sequence3>;
/ r. N I S) _! a- _; s: [end;
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* `, S# D& v1 T2循环语句
) ], X1 g2 b* H7 H* E- D (1) from <statement sequence1>; g+ c: f: A: k: w& {5 j
until <condition> loop
Y, r6 `+ H1 A' Y3 Q9 y <statement sequence2>;
. S- C0 O" Y7 g) B* V5 B end;
/ G! K$ N# I& {' l+ v) s (2) while <condition> loop
+ }6 T5 a }! ^ <statement sequence1>;
$ _6 S4 c/ `) K) R8 G: b& ~1 h+ G end;
- ~5 a# b6 e2 g! {9 S5 J4 _9 X (3) repeat
/ e) C. ], W- d" R0 H l <statement sequence1>;
' h; C. ~& }4 t$ p, q until <condition>;
9 \$ X' P6 t: a0 y (4) for <condition> to <condition> loop! p; L2 k" |( c; S" ]
<statement sequence1>;% Q6 S9 {4 ~( U! j( @0 N- ?
next;2 @+ p% Z' @5 ]: A3 L O
3中断语句, i2 c8 z7 C2 I' w5 w
waituntil <condition> prio <integer expression>;3 Y: n% O" N0 p3 c% Y( r
+ Q( C8 N# D6 k% G2 g* U
5 W7 k% W/ ]2 |! F以上为常用的函数！
; F( E$ K* @% ^# R还有很多，如有需要我把资料发到你邮箱里
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