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发表于 2012-11-13 08:48:12
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1判断语句, f3 u& O- u" w2 v) n
if <condition> then& o3 z5 L: o$ C: T
<statement sequence1>;( O6 _- Q; ?/ a, w8 N
elseif <condition> then3 W* D& E2 t( _- M: ?: r
<statement sequence2>; ?: ^3 ?$ W/ \
else 4 C/ e& E" J5 ~( V
<statement sequence3>;( p. T# g( U! _5 d0 ^9 N) d
end;
) p; Y9 O) b' u& C$ j$ a如果分支比较多，用：
% ]) E E8 f2 v- M6 ?: q inspect <expression>! r' h k3 x; i+ Y+ ^( g- E; t
when <constant_list> then
% n" k* m3 J" v% ` <statement sequence1>;
+ j* m4 Z* u2 V) v when <constant_list> then+ Z2 A/ Q- a6 @* D2 l3 H
<statement sequence2>;( N. M0 j, F) p: B) C
...
+ {+ ` A! b1 B# e4 b( U0 J else
& f& O# K `# i! u9 A- P <statement sequence3>;
# _/ q3 l/ P. g# w1 E8 F5 {end;: J/ S Z2 X- s% }+ w! J, {
" s- S7 J, [7 s4 D/ l9 Q3 \$ a2循环语句
4 I5 g, W0 \ D& y+ j (1) from <statement sequence1>; X) j* M3 m% x" M' C9 s
until <condition> loop
. L: S" Q2 O+ h8 R* w) p. T <statement sequence2>;$ j0 W2 a% o; S% ~% g; e0 B; M. i- T4 N
end;! F6 n3 A# n. B, G* a3 h+ e
(2) while <condition> loop
. |7 Y* m$ E% l* h <statement sequence1>;
" }- f/ a; c( ] Q end;
2 j$ t* t3 G9 V (3) repeat & e7 o4 t7 i# X4 J7 ?
<statement sequence1>;4 ]) h9 C$ o/ K3 [# x6 Q6 g
until <condition>;. N, w5 S* x1 u
(4) for <condition> to <condition> loop; ?* w/ |" u8 f. h; U- u; y* I
<statement sequence1>;$ a2 T* [6 L) [) M
next;
6 M. Z1 d- I9 E( X3中断语句% H. A3 x* i7 z; t) P2 ?& D M
waituntil <condition> prio <integer expression>;
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以上为常用的函数！ O/ w) O% m/ H" F+ A
还有很多，如有需要我把资料发到你邮箱里 & p. w7 e' A' m$ O6 D
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