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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
! H( I- H6 _& t" }' t+ W if <condition> then) C$ e" X8 p) `$ F, X
<statement sequence1>;
; i/ D" O- L, S/ L9 I elseif <condition> then) o) u! l+ u* a5 @
<statement sequence2>;
2 A3 b3 l4 S% Z& D0 a! O else ; q5 Z3 ?* d6 U' ]* A1 A% w
<statement sequence3>;
6 z* a1 b& d2 a9 `* t, s end;
0 ^% P3 l# I( l# Z如果分支比较多，用：5 u2 o% ^4 D/ K q+ ~2 r, S, O5 l2 x
inspect <expression>9 `, S4 d! y" g; j# i/ }" L P
when <constant_list> then
: _% U6 ?0 J0 R' b <statement sequence1>;
( y5 w5 L% [' |( t when <constant_list> then
' v- p" [* A6 b, r& t0 z <statement sequence2>;
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else
) a( g% Z% d" ]) b( M' R <statement sequence3>;
; a5 Y' X1 v- U4 Xend;
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2循环语句6 N+ e8 v3 Q8 P3 l; h' H- V
(1) from <statement sequence1>7 a4 W$ ?* m; U7 t7 N* m8 ?
until <condition> loop
2 X- O1 E2 {0 {0 c0 | <statement sequence2>;% r" [2 M- @6 @
end;
& U7 V* Y# g* S5 O5 v+ ? (2) while <condition> loop7 y: t/ E+ M+ j' D( x: N* ^" Z
<statement sequence1>; j- \! ^) e# Y- L4 _$ D
end;& B9 W [& L& _8 q
(3) repeat
j" x& b, f0 ? <statement sequence1>;
, \; G+ t6 X0 i% W! W5 V/ A until <condition>;
. `+ X2 j8 m( I: N' `& ~- U! r9 ~ (4) for <condition> to <condition> loop0 l4 @- e$ }+ U+ w8 o
<statement sequence1>;
R8 N+ t) a+ g: p7 e next;# Z. ~, q" z* q( @0 ]8 w- S/ y
3中断语句
& @5 U# W, Z0 S" v waituntil <condition> prio <integer expression>;
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) @1 r* R: F1 U+ p0 A. V! N以上为常用的函数！
/ `' n6 k6 N9 [+ D% C t还有很多，如有需要我把资料发到你邮箱里 : d3 s8 f: b/ V1 y h& V
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