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发表于 2012-11-13 08:48:12
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1判断语句* [0 l) F* p+ ]3 a
if <condition> then- t: G! v$ Y- G& B
<statement sequence1>;) L) J+ _% x- t* k1 p
elseif <condition> then
: U' v M3 v7 _ <statement sequence2>;" ~8 U7 e6 n, O( H% i9 L" j
else $ L4 a# r. q! u
<statement sequence3>;1 j; x1 Z/ j5 }$ J4 v7 M
end;- L/ D! S; Y' e7 E2 F: s
如果分支比较多，用：
3 H/ D# ?2 w; o inspect <expression>
% Y2 D" d1 N+ N( O$ S when <constant_list> then8 u+ M3 y1 |6 b$ O- w* C
<statement sequence1>;" _+ I+ J% m' o9 k3 a
when <constant_list> then
" |/ Y) l# H8 y' l: P, b7 I <statement sequence2>;
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else. ~. I. y, A! D |$ a; _9 K
<statement sequence3>;. u- f5 b4 N; t* A: ]
end;9 i1 V' D8 S' y `+ {
. b; Z: G# ?3 X, I2循环语句
a' D$ r& \ {5 J( J9 R# q (1) from <statement sequence1>3 g2 }5 G. p7 J1 d) S% d
until <condition> loop
, H% H* W- \3 v o( \5 K <statement sequence2>;# n8 N+ G5 g+ W
end;
- P4 F x- e5 @3 F4 M, V (2) while <condition> loop
! w+ Y3 V! Z5 C! K; Y7 y <statement sequence1>;
9 ^+ ^2 r4 s6 j7 g end;
1 X7 b8 S: Y# @4 m (3) repeat 8 H+ n! J4 X3 H9 T1 g
<statement sequence1>;" R6 z, D, V6 y6 t
until <condition>;
& }5 b, {% L3 W2 r' ` (4) for <condition> to <condition> loop1 R- m: p3 \+ Q0 p1 w! C8 n9 E9 E
<statement sequence1>;
3 l' N( B3 s. t8 t+ k next;
2 i/ B3 H, K! }1 z' f f- r k3中断语句
9 X7 [- B( D" A waituntil <condition> prio <integer expression>;$ f4 p8 z% H- A5 {/ y5 w
3 P+ U, I& J! t0 X5 {
7 {$ l$ F1 g0 o' f& L# y
以上为常用的函数！( z9 S+ r; C' G+ y* P" w$ A* b
还有很多，如有需要我把资料发到你邮箱里 ( v' Q; _9 V6 x% s1 P+ \% n, T0 m6 ~
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