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发表于 2012-11-13 08:48:12
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1判断语句( R- ^, _: q) _) S1 u! P1 Q
if <condition> then
7 U- Q4 Y1 T" ]8 U <statement sequence1>;0 D7 x% f( t9 {6 n! |! o4 w
elseif <condition> then
4 D; [, a6 C' k; [ <statement sequence2>;
" Z0 E4 }% T) v0 G. c# w else
7 `5 F7 t3 ?4 `1 Q: |2 ]) r* W <statement sequence3>;
, _0 q7 e/ Y# h; `6 l: W0 v' u end;
. z" U% W! g& t8 M% {如果分支比较多，用：
, h7 A4 `8 d3 V3 y1 j% Y% N, j inspect <expression>
' M' y; W. `/ c/ \5 v when <constant_list> then$ E s/ Z4 L8 D+ @
<statement sequence1>;; N2 \; B; ]+ ^* V: m; ]% o
when <constant_list> then, B4 Y: B/ N% t5 h( K) X8 H, \
<statement sequence2>;9 j# q0 a& F0 b9 }3 a0 e ^
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else
1 Y! D9 Z" V \& X" F7 Q <statement sequence3>;
0 d i; \7 u4 @# Hend;
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2循环语句
2 N/ A( A4 z3 U+ O6 q% L (1) from <statement sequence1>; A6 K7 o9 C5 G$ B. x8 O4 a9 y
until <condition> loop
) y# |8 Y- B' ^2 j% R3 D t <statement sequence2>;
5 b+ k6 x+ [. M) R5 ~ end;$ ?( C' K0 ^* y4 E7 t0 M- V/ I4 t
(2) while <condition> loop3 k/ V7 ` Q8 |! v* x" |9 y6 h
<statement sequence1>;% A+ j3 P; v8 N) Y, G# E
end;
$ O: \% [4 N; |3 b (3) repeat
- t& C) t6 z" Q. w) }: n. k9 B <statement sequence1>;
+ e, E, {0 k9 L until <condition>;3 N. P& D4 B8 a2 t3 o; ?4 W
(4) for <condition> to <condition> loop) u/ D6 f) f, Z, j7 E) g
<statement sequence1>;4 e% f- _/ x+ U
next;
) \5 q% c! b# O9 C' g0 [. {3中断语句# \% w, \6 _# e& P
waituntil <condition> prio <integer expression>;& \" ?( v# S/ X) d! P
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0 f7 O. V' v+ B* R以上为常用的函数！9 A3 e2 I; ^ v2 K" @0 T
还有很多，如有需要我把资料发到你邮箱里
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