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发表于 2012-11-13 08:48:12
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1判断语句0 \- ?6 Z) ~; x
if <condition> then
0 }: n/ R7 P8 f. d" W4 s <statement sequence1>;
3 Y D) p' s0 T6 q/ h elseif <condition> then' r2 f* o1 p& \6 G! J8 y d
<statement sequence2>;& W3 F: T0 a" C% h1 r8 A" Y( L. R
else
4 K& I( |+ i |3 Z' y* J* D& A <statement sequence3>;% x6 W4 P9 T9 {+ J7 A0 _; j
end;
1 [- D. C9 H: h$ m( r! J0 M如果分支比较多，用：
/ e- V6 Z7 k- }( j9 l6 v3 f inspect <expression>9 \ } C1 F& P8 Q6 o6 _; X
when <constant_list> then
% T, B' z5 l# Q7 W9 y a) m# ]* o <statement sequence1>;
/ u2 s* }7 Y* M8 F when <constant_list> then" g5 G& Q. z% n: z; @, _2 u
<statement sequence2>;# A$ I6 y1 B8 j* o( A9 U
...
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<statement sequence3>;
0 L8 b- |5 x. ]9 Gend;) K+ v) L! l1 W; f3 G- d& E9 `3 H
9 Z# G6 y! `8 x1 p( ?/ [! W! r2循环语句# X1 _$ q% z5 v4 b
(1) from <statement sequence1>8 _/ q" o/ F% v. e9 Q
until <condition> loop0 s/ F: |% w" [* J
<statement sequence2>;
# b/ y; ^9 ]* ] end;! n5 E7 d& Y! o1 R1 u
(2) while <condition> loop0 }# a; O$ i: W2 p1 U" G' z
<statement sequence1>;: K( M) z& h4 Y) x X5 N
end;# ]7 z# {3 _# ]
(3) repeat
% s% x9 |6 T7 \* f1 } <statement sequence1>;
- M+ R" [/ {# ?. H until <condition>;
~& m: T, s0 @ m* J (4) for <condition> to <condition> loop
# J6 ^ H! q; n" n( D; ~* l+ f% Z4 Y <statement sequence1>;
8 h0 a4 d# ?+ z% Q next;
8 U. t( a2 S0 L1 U3中断语句
6 Z7 M* a: E. @3 \ waituntil <condition> prio <integer expression>;
% H/ _. T. a9 u4 @0 y! s, ?: q3 r' t/ @" y! \
% s4 t+ F r+ T" L O. i" w以上为常用的函数！
# I3 D G9 E& l4 G* w: H8 n3 _+ p还有很多，如有需要我把资料发到你邮箱里 * H% Y% P* B5 C, _8 b
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