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发表于 2012-11-13 08:48:12
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1判断语句9 d% O; I1 c% c& F& Q1 s
if <condition> then
# _+ \% K$ @# I2 f }; n; y <statement sequence1>;+ b0 G0 ], i6 a! \# S" H" v
elseif <condition> then9 B4 B8 W1 @& N
<statement sequence2>;8 K9 t! e# I6 e# N, }) C% Y' y" E
else : o$ i& S7 U0 O/ Q7 F6 p/ b
<statement sequence3>;% ~: Y+ h$ R# |3 F$ ~, v# C
end; S2 O- L" V" l6 c, P0 U9 h" W: o( n
如果分支比较多，用：# ~& W6 N! X8 @3 T! D9 c: f' ~
inspect <expression>
6 ]& f# C! O" Y) F! E. g6 v when <constant_list> then/ n% [/ {5 V4 I& W
<statement sequence1>;0 e! V& v+ Z" h5 q. G x5 ~
when <constant_list> then
3 s6 @+ I0 J% a2 E! d+ D) G <statement sequence2>;
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+ O- ^8 x. ]: A9 ?5 [1 X$ y! D else
+ Z# K7 h# G$ w3 U( c: o <statement sequence3>;% d2 |% F4 b7 n8 V8 h+ w. x
end;- ~4 [) F) B5 B0 |; S
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2循环语句
/ i5 w2 o( O! D/ I) i) l* ]7 M (1) from <statement sequence1>2 g& L' q! {, R
until <condition> loop) H3 h T: J" f' W
<statement sequence2>;
- d1 u1 d! |$ v9 H9 K end;
! m; c3 o# b: D (2) while <condition> loop
5 v8 w1 w& p+ p <statement sequence1>;" J) b& L% k, @- o4 ?3 \
end;
/ M# u6 N4 V4 A' o5 q8 j8 o (3) repeat
/ q) j- \* Z0 L3 [2 G <statement sequence1>;
1 y1 q4 B0 F. P# n4 C+ U/ e until <condition>;
z" M( }% _; @3 I" F7 b (4) for <condition> to <condition> loop5 g4 \8 P* x7 q( H# C9 ^
<statement sequence1>;) n' V0 e5 @) ~: I
next;- H N! u! g: w* |
3中断语句$ m$ Y5 f$ b% h, ]4 B
waituntil <condition> prio <integer expression>;
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以上为常用的函数！0 b# E9 M( R5 b
还有很多，如有需要我把资料发到你邮箱里 2 G. V3 a' i% Z5 `# B& `$ d
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