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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
1 C7 q/ A' o8 n& i$ H if <condition> then% b+ K, W3 k2 N2 v# a
<statement sequence1>;
9 N7 u6 E+ g: y+ F5 v: W. ]6 {5 ^ elseif <condition> then [3 D* O( B- }
<statement sequence2>;
* D o4 k! d! M# m! F3 R( a- z" U else
7 G6 }# L1 L; Z& g2 i% t% ~ <statement sequence3>;6 ` G# }, ~3 x/ M
end;
- m, J/ R5 b% S# N如果分支比较多，用：* I% L6 @ R; }: X6 S" y0 F( z
inspect <expression>2 d( i2 F8 f: ^' V
when <constant_list> then
3 p# v6 i# G" f' S <statement sequence1>;8 M$ f& X6 K, |. p9 P) h9 S' e1 E
when <constant_list> then
/ _/ ?( U1 M* ]/ e n, b <statement sequence2>;
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else1 t8 z0 S4 H, ?6 S
<statement sequence3>;
: B/ `& l0 O1 N) ~$ w3 h! ~end;$ K5 C. U# G R4 ^+ |3 B
' C) p) B e O" `$ f# K2循环语句
5 i3 y1 x7 A; s (1) from <statement sequence1>; R' c& R! e4 r$ y6 t4 i% g; `
until <condition> loop
- V4 u, {. f* g. k& h$ S0 P: R <statement sequence2>;
; e# s) c( Z) Z$ T end;
6 h J3 g: z" K! T" ^: p7 Q (2) while <condition> loop, \* ]( U! l. O# C* |2 D$ ^
<statement sequence1>;
0 ~5 Z, J" ~5 }5 \ end;2 Q8 A5 B9 f5 y3 O; ~2 `
(3) repeat ; |+ d% i6 @" U3 ^: O$ F! @
<statement sequence1>; n) E+ A/ i. K0 S+ P
until <condition>;1 C' Z @" B8 C" h1 [0 @3 ], Y+ \
(4) for <condition> to <condition> loop
8 p; n: B- s2 }; T+ q <statement sequence1>;
+ e% V W+ m' w+ _ next;4 S% W* R* G2 \, E
3中断语句
5 u& A5 S) \# {7 n! K waituntil <condition> prio <integer expression>;
6 \5 E9 u* l7 w( S: Q! g9 m' X' M. K* W
+ M' `$ @+ f% k- _以上为常用的函数！) ~9 i8 I/ F# B5 m* `# q, f2 T
还有很多，如有需要我把资料发到你邮箱里 9 H" i( d' k1 q( s8 n8 R: G% `
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