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发表于 2012-11-13 08:48:12
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1判断语句" h" O/ X6 s O$ Z! e1 B, ]- F
if <condition> then
8 c5 x0 f# D6 i9 K2 [, C; i$ H <statement sequence1>;' x; M& G6 i) n$ f- I
elseif <condition> then
' ^' M2 O8 U5 g/ N+ q) L2 D& I <statement sequence2>;& L6 f; N$ Q3 t( `0 \/ T
else ' [! n2 Y Z0 X* {) }8 y4 h
<statement sequence3>;2 F$ @$ G$ F4 L7 N' ^8 _; T0 n
end;+ K* x" \" G4 j
如果分支比较多，用：
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when <constant_list> then
b9 |9 ?& W2 M. ~1 l' Y <statement sequence1>;
- ^$ ^9 L% p9 o when <constant_list> then
* { n9 S4 U, H! h5 O5 A, P( @ <statement sequence2>;
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else
: z1 g, Z- f- y$ _ <statement sequence3>;
" z4 y$ W# [) O+ yend;
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* w, ~1 r' I0 K; d7 t2循环语句2 L$ ^( T2 o. @: Z: U
(1) from <statement sequence1>; g- B" K; U, ]" X5 V
until <condition> loop/ E6 t8 F7 t8 r3 Y+ I# ~5 H a/ `
<statement sequence2>;6 Y/ L8 L M* C% t2 s/ e
end;9 o8 ^) N: a ^3 |3 V( H
(2) while <condition> loop
/ V8 B$ m6 J+ F <statement sequence1>;
6 d$ x G7 ~7 `* @4 M- a# ? end;
1 P% G: h" d/ h# O/ } (3) repeat . O6 `6 \# U2 o
<statement sequence1>;; x" \' m- a. n& q9 [$ U- s( b" o4 ^
until <condition>;# P; a; D, s- G3 O
(4) for <condition> to <condition> loop4 \/ [ ~4 Q# m" h" A2 v% Q- S
<statement sequence1>;3 `4 n0 y& N. D2 w
next;
" d! s- b, |! `8 G0 O b3中断语句
% a. d1 \/ D4 O" R) p" B5 X waituntil <condition> prio <integer expression>;
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8 B+ p$ [& r' s以上为常用的函数！4 _9 w3 c2 [: S X& i8 a
还有很多，如有需要我把资料发到你邮箱里
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