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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
! s' _0 M2 _( _8 `( @# J! H if <condition> then
y9 w7 y; w% r6 e8 t% I <statement sequence1>;+ f: X% _+ t. @+ E0 w$ @; Z
elseif <condition> then3 ^: p) m; Y/ H, f7 W2 X9 f
<statement sequence2>;) j S. m* p& M0 V- K
else ! X6 K7 `5 [' A& k9 t% [
<statement sequence3>;) v3 R4 V0 J0 ?* \
end;
. ~% o' |( d0 W$ \ f' P9 D如果分支比较多，用：
! ^9 g0 t" \5 H$ T6 A# Q. v3 m; a inspect <expression># t) o$ l' ~. d
when <constant_list> then
% U1 P! z1 J, k <statement sequence1>;" y2 X1 l/ N, k! b
when <constant_list> then8 l* F5 w, |' m' f3 i8 t- X" ]( Q/ {
<statement sequence2>;+ j- u L7 k: ~8 [
...% {3 L/ Q/ Z; P Z Q+ @
else
5 \9 `1 `5 S* Y <statement sequence3>;
9 p/ J9 h) Y; Gend;4 |8 i! w0 i" a2 ]/ E4 z
2 f1 R2 N, T: W8 z) g2循环语句
9 c! @2 r0 K1 J, J' C (1) from <statement sequence1>' l/ O9 b0 c& j) @
until <condition> loop
( h* \4 w# t' f5 Z) \ <statement sequence2>;
1 V% ]- l& ]/ f) a8 W" @2 l# ? end;" v" U' k+ O7 T- r, W; S, }4 N; F
(2) while <condition> loop
% J8 z/ o" h- F <statement sequence1>;6 G8 T6 k; {& H+ v0 O* K4 V) a
end;' c- y5 e* u! G& x0 ]5 @* {
(3) repeat
- V0 Q! b+ E G$ r8 W <statement sequence1>;
9 `1 ^- Z- M8 @ }7 z until <condition>;
% E& F* T" {6 T+ }0 O u0 z" y (4) for <condition> to <condition> loop; Y+ M6 |5 K2 A, f
<statement sequence1>;
2 G" |; M! \2 q, S- n7 P next;, w: u- H1 E6 a
3中断语句* S+ F& P( Q( O o- p
waituntil <condition> prio <integer expression>;
& |: h! F7 x( }# L; r+ O& f+ j9 O, u- t C$ S) @
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以上为常用的函数！
8 T7 A E* J9 |. i7 I还有很多，如有需要我把资料发到你邮箱里 + \: c- G1 L* S) |7 a
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