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发表于 2012-11-13 08:48:12
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1判断语句/ T% g3 u* W4 l* z5 B4 |: W; u
if <condition> then' m$ y( O1 F! Q0 Y6 a& T
<statement sequence1>;2 H2 u6 r I$ n3 b A& `
elseif <condition> then# u+ p7 \% | `3 r3 D9 P* W
<statement sequence2>;
, m7 D b- Q# C0 A* c" A( z else
1 k3 q+ F8 d* A: F$ b0 z2 L' f <statement sequence3>; O7 u3 E8 M- K, n
end;, e2 H3 I Z/ C/ W
如果分支比较多，用：
7 N% [- u3 |8 y: S" ] inspect <expression>- |7 N7 T g3 I( Q1 D+ F
when <constant_list> then% ]0 a- y8 C" e& `* z
<statement sequence1>;
. H: s% a! ^, J* B3 m; N/ } when <constant_list> then9 |9 P* P. X+ B7 E. u- t
<statement sequence2>;
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else
& X- g1 ~+ J4 f2 G) Z4 B <statement sequence3>;
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8 U( x6 Z) X, k+ Q* Z1 k" ~2循环语句
6 `1 i8 g5 `- d1 I# J( O (1) from <statement sequence1>
; n0 f' o( h% A6 H# Z3 _% a until <condition> loop' Z+ w0 i, s/ g
<statement sequence2>;
8 j) z) ~, E0 V8 t end;1 h7 S0 e1 c0 j& _* M8 E
(2) while <condition> loop$ f- n9 f( U# U
<statement sequence1>;
* M5 S9 }7 u5 W# \ end;
" B2 Z" y2 I, M$ v (3) repeat ! ]- y6 |9 |: h m% [; m
<statement sequence1>;) A R( z9 r0 D" {' E- e) J
until <condition>;) d3 o B K, Q8 N! n B) o) \
(4) for <condition> to <condition> loop: F' d0 d$ w& |! b" q3 n- p# u2 c
<statement sequence1>;& @3 H* @ q- d( Z5 Y
next;6 I- l5 Z7 K, J/ p o* ~/ @
3中断语句' V# q' e: y6 p; K9 Z9 U
waituntil <condition> prio <integer expression>;! Z' A& S- y+ H; t! N, C
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以上为常用的函数！& ]6 _' m5 h, T u1 p: q$ O. T+ |
还有很多，如有需要我把资料发到你邮箱里 ' m! G( B+ I1 a% t& W9 A
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