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发表于 2012-11-13 08:48:12
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1判断语句4 i+ J( x. o6 v# t! J$ H$ x6 E
if <condition> then
A) Y7 D R& m7 { \% V% z <statement sequence1>;
1 |! V1 Q y: [ M: `! b# B; H elseif <condition> then1 K( R6 y( h; a9 y1 z3 H
<statement sequence2>;
2 l0 F% J( [+ ^2 i/ l/ H0 H" w else ' l p2 Q) Z% E. p W
<statement sequence3>;4 `7 f1 P1 D8 ]3 L5 g
end;: D& S' I# w# z
如果分支比较多，用：
) E3 H2 V( f$ W# \; c4 V* S inspect <expression>. o: f; b9 B4 [
when <constant_list> then& R ~% Y, L; Z- D0 h
<statement sequence1>;3 R% B" D- ?9 w2 U/ p3 X
when <constant_list> then! p* e+ v0 Z7 t
<statement sequence2>;2 A. N( }# J' W8 w K9 y
...& _2 o, ^3 V2 V* x: _
else
1 T- H+ L% p! i# Q! _ <statement sequence3>;2 `/ @ |6 l! v- r
end;
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2循环语句
1 x* p+ _, ]2 Y2 S7 {; u (1) from <statement sequence1>* f. d: T6 u9 h1 U& H
until <condition> loop% i: H# C- D% t: Y
<statement sequence2>;# s- k& c7 B0 D' }/ b
end;
# @+ l7 l% i7 B (2) while <condition> loop
( a6 T4 u9 R- B( L& D `+ f$ Z <statement sequence1>;
1 y+ f0 V$ Q6 F- B+ X& p end;1 ^% ?! s/ T- u: c, m- d
(3) repeat
/ E( t% J" O7 [8 z: n <statement sequence1>;
a; r6 k" o% Q until <condition>;
8 ~, @" c0 q1 M* A7 N- J: U (4) for <condition> to <condition> loop
7 _5 E% h, h4 u% x }( c8 z <statement sequence1>;1 B& |; h! P4 @* b: M) p
next;
, i& b2 n; H# D* N3中断语句
# {" U7 n' E& P3 @) {% L waituntil <condition> prio <integer expression>;
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8 A! Y& v5 p( L- M! a以上为常用的函数！
/ J: g. f/ Y8 f- n" G还有很多，如有需要我把资料发到你邮箱里 / R! }) A, J( B% Z1 F. d2 y
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