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发表于 2012-11-13 08:48:12
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1判断语句
3 o& {& v5 B( |& g if <condition> then
6 ?- i6 ^3 K1 l6 ?( W8 m0 r <statement sequence1>;
8 D! ?7 L! A) ]+ ]6 d elseif <condition> then
3 m/ {3 F3 l2 G1 n% m# A <statement sequence2>;* H- X2 B4 P% _
else + G* ]1 _! C0 G$ @0 g
<statement sequence3>;
4 ]& T: ~. g2 n6 @- J end;: R3 t# @3 H' r. V9 @7 e
如果分支比较多，用：
7 e, c, M ]5 R9 e inspect <expression>% P$ ~, y# I* I: K- L, s
when <constant_list> then7 S" O6 |. S* t" V5 O
<statement sequence1>;
. u( U0 H9 J4 N when <constant_list> then/ ]$ n, t# A" F; I
<statement sequence2>;
, S( A$ ?9 a3 C. L3 M ...
2 w4 t' G7 L5 O5 S else
/ m; ~) {- O$ p- h5 b <statement sequence3>;7 k. s: S0 t5 W5 T
end;
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2循环语句" L# z% B1 H7 B; o7 _ E
(1) from <statement sequence1>
# \7 S* n' K2 R6 y- C until <condition> loop
. \6 x- G; R- A# L4 C <statement sequence2>;
4 ^% Y- P8 U6 r; F: _! W8 l end;
0 l& X/ y+ h4 x' H6 C (2) while <condition> loop
9 v/ v% o. G1 D7 b <statement sequence1>; g6 C' y9 U5 m# [
end;
% K) B& l a. c# R (3) repeat - u6 D3 |$ d/ w$ n- }& ?& H4 w9 a8 [
<statement sequence1>;
8 A4 P2 B7 T% y P" g until <condition>;
8 B! Z' [) e) `) @" | (4) for <condition> to <condition> loop
# F8 [& g6 V4 c& M$ x; Z( v0 k <statement sequence1>; _; p4 p2 t5 V5 n
next;0 C8 _* }) h) e
3中断语句* u* q+ Z' u8 Y5 [; N( L
waituntil <condition> prio <integer expression>;
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以上为常用的函数！
# @4 d3 a$ v ~还有很多，如有需要我把资料发到你邮箱里 2 f& r8 z: K5 o( v
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2 \; ~$ Y5 c& j* _
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