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发表于 2012-11-13 08:48:12
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1判断语句/ S8 a/ c/ c; r3 y$ x' M1 ^
if <condition> then
' L- z9 k. g$ s3 y7 e: O$ I: [ <statement sequence1>;
9 d9 I. P$ _7 K/ t elseif <condition> then' j/ t2 d. ~% T4 z9 s# {
<statement sequence2>;& E9 _1 R9 @! R& z. a0 ?
else
5 h5 `+ Z5 A5 S$ C& R i/ c: m <statement sequence3>;
+ P5 q8 i+ h$ f/ m0 V9 L- Q( L end;
4 k; h7 f+ g! R+ @9 D, F5 o如果分支比较多，用：
' e u6 E9 p3 Z, [( G6 _7 t5 z inspect <expression>
/ Z0 I7 [* B4 H; B1 a when <constant_list> then
' H1 M& N6 ]4 X* f8 h$ F <statement sequence1>;
9 V6 \+ B, t, @& s when <constant_list> then
& m" n |1 I* h5 [$ Q! h' b <statement sequence2>;. |; C7 ^6 y9 z4 F
...
% [: j0 n! i$ I3 P0 K+ N% P$ s c else
) O2 d4 {6 f: _ <statement sequence3>;1 J, P( v: Y( @1 h& g2 d
end;: Z/ Z0 W2 r) W* K, B" ~) {0 w
4 ?* V5 W' B! P4 U2循环语句
: M5 J' n* q+ X' R5 x (1) from <statement sequence1>
/ t! h1 N" s8 W8 ^# O0 L1 q1 o until <condition> loop
3 {; x n7 ]+ J) Z3 c8 ]6 p5 w: m <statement sequence2>;
0 I+ S8 H& q/ ~( G end;
9 T/ ^0 m! p3 H6 c2 i (2) while <condition> loop: D: l. _' N" i% E+ K/ ^, I
<statement sequence1>;' d/ ` T: d6 A% X) {- V6 n5 S
end;
0 K# v) I3 h: _; P7 _4 K (3) repeat : S4 r1 m6 u* Y5 K3 T, M* w
<statement sequence1>;6 Q, C0 c6 A! c( ?1 @! i
until <condition>;
( T& f5 H' D& L" E% N6 U$ W (4) for <condition> to <condition> loop
* U! c# c4 _# V <statement sequence1>; w8 Q$ D1 {- \- B' X7 |# T3 L
next; }4 \! q# N8 _: x- }5 j
3中断语句( p& P) L, G3 b$ ]
waituntil <condition> prio <integer expression>;. N+ j5 ]: L6 A) Q: [
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2 r8 U# V* ?6 w, o% i& g5 g以上为常用的函数！8 B# l! P& a9 K1 t8 \
还有很多，如有需要我把资料发到你邮箱里 ( G7 R5 A) |5 Z' t
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