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发表于 2012-11-13 08:48:12
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1判断语句( u& @9 D5 d: P9 H
if <condition> then( e9 s, [0 o* t" M5 r
<statement sequence1>;+ ]" B0 z4 K7 E9 y& g
elseif <condition> then6 ^* ~! n, H: H: O) f% ]+ \8 ^6 L
<statement sequence2>;
8 J& [2 @- w1 ~/ {1 v- b( y3 t else
2 d; J) x+ k4 {$ K <statement sequence3>;( b: j7 m E7 _2 D' [# a
end;
9 a$ r, R) l& G% v4 O; y如果分支比较多，用：
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when <constant_list> then
( T* ~6 \. C6 U) S2 C <statement sequence1>;5 b* o; L9 B4 d) B) w8 B* K
when <constant_list> then
$ |+ R8 z4 q. T <statement sequence2>;6 V3 @5 ?! H- u9 s0 n% \
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else8 w# L9 L1 M* X: A. Y }5 Y+ c
<statement sequence3>;
$ T& d$ g8 p' @0 p4 A' x# s3 \! Oend;: q% x3 F7 K) M y
, w9 P7 d4 _. v b+ I0 @2 G2循环语句! X" k5 [/ e! y( R8 b
(1) from <statement sequence1>! K K8 Y( k$ f, K5 u: w8 o* B$ v
until <condition> loop+ m! m- p! h6 |% P/ ] W
<statement sequence2>;8 g- ~% H9 [! T1 q: l
end;
2 f( B+ S# z7 Y/ Z% l# V (2) while <condition> loop
M, m+ r7 M g m8 q+ X <statement sequence1>;
8 r$ B2 M/ D0 o. f end;2 ]5 I% D2 M& e. S& r ^1 k) c
(3) repeat
, m) Q/ k4 V/ y0 I7 I <statement sequence1>;
4 s: k! w9 F3 N* z8 ~4 g until <condition>;! S0 B7 d; u9 s
(4) for <condition> to <condition> loop7 v$ U, K# V# L* M1 r, |
<statement sequence1>;
% u- p5 N' w' ]/ _ next;6 d, a- K6 O4 o w) o% V
3中断语句8 M/ w3 t9 Y' k) U8 A' [' |8 M
waituntil <condition> prio <integer expression>;
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以上为常用的函数！
4 o( T9 l7 [( `" G还有很多，如有需要我把资料发到你邮箱里
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