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发表于 2012-11-13 08:48:12
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1判断语句
% S" ]# A1 q, ~8 F3 s! B if <condition> then4 e7 e9 I! j% n% @
<statement sequence1>;# c2 L; u8 {* R+ h8 ^
elseif <condition> then8 N. v4 S" ]$ z! c; U* ]
<statement sequence2>;
5 o2 F$ d8 S& t* U2 y( D4 p% I, s else
& p6 Q) U6 _7 G+ p1 N <statement sequence3>;2 I" u% A( x3 r3 n. f- F2 A
end;
7 o* z5 P- ~2 R6 R如果分支比较多，用：
5 E9 ]$ f( {9 S- \. | inspect <expression>
Z$ {. w& h q7 h. {; e when <constant_list> then
7 l* m, E2 D# u <statement sequence1>;
; H) l4 V7 A1 I when <constant_list> then
, k! C V0 F% p8 Y. x: t0 i% e <statement sequence2>;
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else' b2 S3 [2 H' Q# ?* K1 T
<statement sequence3>;: B2 |7 A# k) P" R
end;
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2循环语句& G+ X$ ~, ]3 |: g7 ^# h9 h/ q
(1) from <statement sequence1>6 j+ Y1 G5 g$ p+ h6 r+ K
until <condition> loop
' Y- _% @, C* G- C& M" k; _/ a <statement sequence2>;
% v% Q, F+ z. Q" U& H end;) R! n' g; C6 D
(2) while <condition> loop
7 Z; J6 s" a6 s8 {% @ <statement sequence1>;
# d Y; U, a/ W0 C$ Y! u end;
+ U+ P- j4 q/ _9 I1 Q( U8 V (3) repeat - S; k0 c, o" t- \6 y3 M# y+ j! g6 x+ y
<statement sequence1>;! O; t1 w8 A0 k9 @
until <condition>;
# D2 h, H' B$ _. r (4) for <condition> to <condition> loop
: Y2 ^, Y% C ~7 c8 r3 i5 Y <statement sequence1>;
+ H N* j8 f' L1 K3 o next;
]; g3 P" j5 S- o" {2 G2 h* h! q2 P/ y& F3中断语句$ V$ H* l6 h8 J
waituntil <condition> prio <integer expression>;
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以上为常用的函数！
; h4 `. J! W& _7 w7 [& L1 e- O4 t还有很多，如有需要我把资料发到你邮箱里
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