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发表于 2012-11-13 08:48:12
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1判断语句" F& T7 ]/ u4 ~ H; e$ b- D& z
if <condition> then+ H: v+ I2 J) ], h% O0 c8 _0 I
<statement sequence1>;8 S+ B- f" ?" V" Z4 C) e
elseif <condition> then
: I* N" Q* w. H- S% Y5 @ <statement sequence2>;2 T$ Z9 d1 n+ ^4 H2 Z: \8 o; D
else 1 `: ^" P- N2 F
<statement sequence3>;& F' j! T( s0 u/ ?; ]
end;& Q. G& X# |+ `& S U
如果分支比较多，用：
% {5 t+ R9 [& i( E5 A inspect <expression>
9 V4 {1 M' o. I- D3 \& e when <constant_list> then& F k$ Z" `1 X. o
<statement sequence1>;4 o4 t4 I V8 n+ [1 }2 I5 I' _7 ~
when <constant_list> then
' U5 r2 c3 ]! F8 M, b o <statement sequence2>;
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else) n# }& q5 M% m2 _4 T! v
<statement sequence3>;$ e& J% B, U" e Y. @' B* y
end;
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2循环语句( [" n5 B' O* v' @ q
(1) from <statement sequence1>
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<statement sequence2>;
# F n E+ k0 H1 j& l( e' e, ] end;
7 C# t5 J0 t4 i (2) while <condition> loop
. @2 @; q7 ~- R+ c$ \# _6 i: W9 V <statement sequence1>;
9 A( S$ }5 y# ^4 k9 B& a8 V, P end;6 Y' p6 {8 K* c% K$ H
(3) repeat
6 w4 M1 F% O/ O2 [- I5 O0 w2 J7 b <statement sequence1>;
% U+ W/ q8 V/ N% c+ ~- O until <condition>;- U0 X* N3 J, @( K$ Q& X
(4) for <condition> to <condition> loop; P# t [3 S5 D
<statement sequence1>;. T# S- f* u4 {6 [/ U3 D% K+ w
next;5 ]$ U' t) M# G' L! V6 b, q
3中断语句
# B' x# L1 w* e/ Q8 A1 {: z8 M waituntil <condition> prio <integer expression>;
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以上为常用的函数！7 J1 A& ^% Q$ H9 g* o( A8 J' s" q
还有很多，如有需要我把资料发到你邮箱里
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