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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句
. X5 W* I u" H' ` if <condition> then" K: C9 G6 Q, P# F* F6 a
<statement sequence1>;
4 r5 z6 D* d9 \' g. o1 i' t elseif <condition> then! K, H* E$ a' `
<statement sequence2>;+ h( _4 e6 q# J6 Q1 w% N
else
) ?+ R/ e+ d1 d0 \ s, ] <statement sequence3>;8 \2 H: E& d. W9 K# ^2 v* E/ G
end;
" O7 p( ~9 @/ X& Q& t如果分支比较多，用：
$ ^+ L' p: y) L, U" k- i: K8 R" \ inspect <expression>
3 s; v, n3 j2 M9 H# A! N when <constant_list> then& s: N1 T! @: i/ l1 B/ B5 r
<statement sequence1>;
[2 `' u9 h3 h- b when <constant_list> then
2 B& _+ s9 w7 N1 g- f7 t1 Z/ a- J <statement sequence2>;0 H6 V) E# ?- A2 h6 \$ V# K t
...3 G T4 q7 c6 q% g; v
else
; H4 G N; F' q1 D3 Q. S0 K6 o6 A9 X <statement sequence3>;
+ ?# q# s6 U( _" Y5 C# B9 t" cend;
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}7 Z) j s8 h( z+ H8 a+ _2循环语句
! {( w9 X4 s* }( y( w5 W+ F (1) from <statement sequence1>
$ g; X/ t8 E4 l) I* P# q until <condition> loop0 o/ W% X% p& m
<statement sequence2>;6 [) E# ^' R1 x
end;9 l& c. r7 s U0 e; j
(2) while <condition> loop
0 O$ Z/ R, _: w <statement sequence1>;
* [1 L" i! X4 T" E" M1 k end;+ W. B' D: n0 x& z7 s, g) O
(3) repeat
* r1 x" R' t1 O2 m* S <statement sequence1>;
$ w0 i2 E) n+ o: |, J" N0 z% |. G; n until <condition>;
, c! A' x9 \. K: _' I (4) for <condition> to <condition> loop9 o5 l" x8 W% q0 s" I" B
<statement sequence1>;
9 y, H- E$ ~4 f) b6 m( a next;" \* u! A' e8 r
3中断语句, K: g3 _6 F f9 z! W0 [
waituntil <condition> prio <integer expression>;, a# l/ z* Y1 F% z5 W) z9 o5 _* Q$ f
b; J, ?' m% @) B* q4 p8 U
4 Q( Q2 x5 w5 R& D! {) Q以上为常用的函数！ f& E/ Q; g' P3 ^: y+ X5 ?" w/ _
还有很多，如有需要我把资料发到你邮箱里 1 E# {7 Y( w; F% c% w. N
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