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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
* b. A. ]# O! d if <condition> then/ L0 Q: S! k1 w. `. O4 n( _
<statement sequence1>;/ t8 p7 R6 n& N
elseif <condition> then
0 z, l; a/ f9 F% y' ^3 Z; L8 h* X <statement sequence2>;4 O: G7 [' @3 ?
else
+ c; `! z# i7 h% {! j+ l; o <statement sequence3>;
- H. |0 ]8 G' Y; `0 _, e end;
- n2 V" u+ r8 q0 r ?' u7 M/ I如果分支比较多，用：
0 x* r$ O2 k7 M+ e6 Y1 q inspect <expression>5 _' F$ D* q0 K
when <constant_list> then
" k- v9 G( i% i$ g; N" N4 q <statement sequence1>;
0 c3 j% ^; g- U8 d( ~, W9 Q3 f2 g0 s when <constant_list> then
3 r) j, E$ G$ A$ ~% X, z# ~& \ <statement sequence2>;
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else+ Q7 I' b8 S" F+ O& B4 R- p
<statement sequence3>;
O. D" {) V8 ]2 `5 t% M$ Mend;
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# o' O W( [: `, S) E, f- P# ~ c2循环语句2 y2 V8 [4 \8 f$ V
(1) from <statement sequence1>1 s4 P+ R, e8 V" I4 t6 r1 \! E
until <condition> loop: {% w3 r$ h! T! @1 O6 T- I8 K$ ~
<statement sequence2>;
5 n, k0 ^3 k2 m- ?0 q6 R) f4 M: Z end;& F! C# o) c% A
(2) while <condition> loop
2 j+ r/ t% o8 e2 z* n+ g" v <statement sequence1>;: K" R6 Z! ?! X5 U9 A7 y
end;
* J9 F5 I* A& n; Z C/ I (3) repeat 1 ?+ u B1 d$ @' ?/ K
<statement sequence1>;4 Z Q- f% H7 P0 L( C& l- A' g! d3 S4 s
until <condition>; C; U- a: }# S/ w4 o& O
(4) for <condition> to <condition> loop
! c* Z4 m: n8 ^" q <statement sequence1>;
5 @. B4 m3 a; b: e! r2 \ next;+ d' o$ A. h' ?7 x3 Z
3中断语句
8 B. F7 M1 d" r3 k, Z! n waituntil <condition> prio <integer expression>;
% e% b- [$ _' n6 b( \- A" G
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以上为常用的函数！5 U5 @: [" T" {9 I! G
还有很多，如有需要我把资料发到你邮箱里
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