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发表于 2012-11-13 08:48:12
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1判断语句
, y: \ m' g4 S4 u$ Y. ] g if <condition> then
# @% C! T0 H/ ? <statement sequence1>;
/ G2 Q6 s. [' q1 y; m) `! L elseif <condition> then" D- \' F: }! L% @% f
<statement sequence2>;
2 `5 [) \" r7 F1 L( W5 a else
' }! H5 O- a* m( E6 R' l9 Q) }" G <statement sequence3>;
. c9 ?9 L/ y/ q. f- x! Q) u* T end; D* M* y9 \5 R L
如果分支比较多，用：, f8 J$ a, u( B% s
inspect <expression>7 U% |! j* O) s! H0 R
when <constant_list> then' V6 j. c v8 S6 ?
<statement sequence1>;$ ]% l; I. D1 _3 o
when <constant_list> then% @5 ?- P: V% M( Z! i8 R+ E: s
<statement sequence2>;4 A% e9 M, o+ L& P3 E/ t
...
# n% B% T; g: Z9 I8 W% { else
/ u5 r3 @, H. _ <statement sequence3>;
, G& e2 P1 u. R7 [# d6 ?end;) j! ~- V$ x7 V$ D
) B+ k% ^* ^- c7 a! t( A7 u2循环语句
! V2 U. Z; ~- x3 U- J (1) from <statement sequence1>
" e) T0 [5 r" M+ Y; | until <condition> loop
0 o9 T2 B2 }+ A: v2 _# |% X <statement sequence2>;/ V" f/ j- d1 W" A: l
end;% F5 @% ~9 ?, q) Z3 `5 a% P" H. K3 ~
(2) while <condition> loop e4 m% s0 W0 P8 H# S @) K
<statement sequence1>;+ B6 M3 `7 u0 b: ^+ Y6 X/ c
end;4 F" J5 G; c+ v* w9 O% C% ]0 s
(3) repeat
4 X+ V) g) }) V* j2 R <statement sequence1>;
6 ~: l' r$ @, O# ^ until <condition>;
9 l* Y2 ~" o, }3 E( L6 W (4) for <condition> to <condition> loop5 ?4 H; N2 I* C* B
<statement sequence1>;5 S2 i7 B0 g H6 z2 f
next;" l+ w1 M$ @4 J: [
3中断语句" P+ E4 c+ u3 }( [
waituntil <condition> prio <integer expression>;
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/ ~5 X# i" G E4 S以上为常用的函数！4 ~; [0 b9 r" r! |$ _9 K5 n+ Y
还有很多，如有需要我把资料发到你邮箱里 5 ~5 B7 x3 t3 W' l. _
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