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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! d% A4 |) ?8 {! u* P6 X
if <condition> then
8 D1 ?7 l) U* \5 g' G <statement sequence1>;. m7 t9 i: e5 K
elseif <condition> then
P. Q9 A; l% i <statement sequence2>;
1 q. N- N' R8 j+ A% f else
1 k9 _8 b8 H2 R <statement sequence3>;
1 U/ q) x" y. v0 J& p8 Y$ u1 q- J( h$ E end;
1 _9 j% s# d: ?3 {# |& n如果分支比较多，用：
1 Y0 U q& }" Q9 u' z inspect <expression>/ _+ Z/ U& R7 D! e" C0 ^7 o
when <constant_list> then
4 P' K% o1 u E+ e0 N+ P# {$ M <statement sequence1>;
% \, {. ~# ?1 r+ c/ K s1 v3 T when <constant_list> then- E( E0 u6 Z, T0 M3 z
<statement sequence2>;& I/ N6 e' N) i5 H+ b8 F) {
...
8 h% r$ w' U/ q2 d7 } else
6 Q* @+ o: B( h <statement sequence3>;
" E! Y) }8 h1 g* Rend;
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2循环语句
) J4 l/ N8 K" s9 [$ y2 C* c (1) from <statement sequence1>* m) g/ G1 p: X. G+ h7 H
until <condition> loop; B+ n- P# R- a- _9 [* Z# x; E
<statement sequence2>;- X7 M3 ]9 B# i% C' r
end;
/ \# s2 F G! Q (2) while <condition> loop
1 |, U6 \0 @" A9 |9 y9 X <statement sequence1>;$ V; }& Y; j8 {& @" ]1 i( l
end;! H) X" c, p) A
(3) repeat $ t" U1 `: i6 k: q {9 {* t
<statement sequence1>;9 T) O- z4 p. n1 d# O
until <condition>;( S1 i* }3 j* R) I
(4) for <condition> to <condition> loop G+ n3 F5 W4 e4 K5 p
<statement sequence1>;" F& L/ t' h9 B2 F4 S( O
next;
. l4 f) w! c2 y. R k Q- c3中断语句9 g% t8 M) u( d9 e- C/ S q
waituntil <condition> prio <integer expression>;0 w2 g# i/ [; Z0 _& N( ?
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) W; [' g0 S4 G* C% `) a. ]& f7 a2 [以上为常用的函数！
& x" ]; F/ U* \) C; R9 h% n还有很多，如有需要我把资料发到你邮箱里 $ B- ?6 W _& R% P( T
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