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发表于 2012-11-13 08:48:12
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1判断语句4 H% M/ k+ b( d" ]% ~" K0 U) x# u
if <condition> then
( o6 S9 F! |( n4 A& ^$ v <statement sequence1>;0 o+ J' A/ U) a4 E
elseif <condition> then
$ e7 C4 Q5 h9 Q' C. ^8 f+ _ <statement sequence2>;
# u6 \9 d* L- z- B: O; q7 H else
5 E* ^: Z" j3 r0 h9 w3 M' e$ b9 A <statement sequence3>;
1 E" h0 Z+ G1 i, {. s& k3 R end;, j- n% Z0 d9 K9 @/ n
如果分支比较多，用： P) l3 J7 {& [% q
inspect <expression>
3 B3 h( v+ X u* \/ P% C when <constant_list> then0 |4 f8 u0 |7 a3 T
<statement sequence1>;! @ F& u+ H9 L3 r; ^- D
when <constant_list> then
" v% C! f+ L" H t8 ` <statement sequence2>;
- _& E F; A4 g+ I2 w ...
+ T1 q* G0 W2 H- O$ z: p else
# a6 g' w! Z6 y' e- r5 P <statement sequence3>;- w; X% z6 b1 V. j, C
end;
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, v. \+ n! H0 Z0 w9 T1 J y! Q2循环语句
9 P# i! l8 i5 _3 u. l: ~$ M (1) from <statement sequence1>
+ I O4 w, V1 @ until <condition> loop" c1 \* D- d' Z6 c
<statement sequence2>;, P& C4 z; p8 _ V* s
end;0 s8 T3 n9 Y1 e* g9 k. b- e
(2) while <condition> loop
9 P3 A5 W/ U$ P <statement sequence1>;
/ b8 d; [$ ~$ j2 k: s$ n end;
( h; d* @5 h! D; K/ n8 m (3) repeat 7 g3 Q$ F M- ^% z, D
<statement sequence1>;' k: B6 }' ^+ H& }4 M: D9 F
until <condition>;' X8 U, z- }- [
(4) for <condition> to <condition> loop
+ R1 P0 I" ~1 C' {. j; i6 t9 _7 j <statement sequence1>;" r! o6 Q4 j. t8 t$ t4 @: [
next;* n0 i3 N' Y, E
3中断语句
8 ~* h% q- H, S3 Z9 x9 U# x% I waituntil <condition> prio <integer expression>;! ?+ L) x8 W. `
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以上为常用的函数！2 O7 l" _8 S! G U
还有很多，如有需要我把资料发到你邮箱里 " s( I% f- w+ A* g
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