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发表于 2012-11-13 08:48:12
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1判断语句
$ f2 r0 z! k# K/ f" V if <condition> then
% h1 r" r+ v t, q) l) v <statement sequence1>;" s5 e! p# ?( U0 l4 h7 g p
elseif <condition> then
% E4 c9 ^- i0 [# M7 Q( I5 t <statement sequence2>;9 S# ?" \2 S# Q- O Q
else ' ~ p) T# h3 J# E* d
<statement sequence3>;
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如果分支比较多,用:$ ~. B2 ~# q$ L6 P8 r/ u
inspect <expression>* l0 I: a/ w3 W0 q: ?3 x
when <constant_list> then
* m7 I6 k" y: [$ I' ` <statement sequence1>;. v8 C+ `2 t, y& @2 h
when <constant_list> then
' z+ X$ c5 o1 { <statement sequence2>;
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else
/ U5 v! e+ l, F5 z <statement sequence3>;
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" J0 h) u* W/ U8 j& a6 e& h2循环语句
" }* x# ]$ g6 r) g* s (1) from <statement sequence1>2 Z1 W/ v4 A& y* F# [
until <condition> loop% t- T$ T9 W* y V' o; N. v4 @
<statement sequence2>;
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(2) while <condition> loop/ H9 e2 f8 B( j. M. R9 h
<statement sequence1>;$ m" t, b2 p1 v' Y$ I
end;4 J6 ?/ C4 l; N! x5 {
(3) repeat " P0 R, C& h. _3 g( I" Y
<statement sequence1>;4 }3 j6 ^% Q; n6 |4 t
until <condition>;
& H3 w) U5 q5 V3 ` (4) for <condition> to <condition> loop
. d% Q2 \' a: D: m6 x <statement sequence1>;# [* C5 O) H7 k2 l
next;
! {5 ?& g* U9 X; ~3中断语句' y( H; g# P2 u( r0 c; N; w
waituntil <condition> prio <integer expression>;$ r+ o V% B7 ^7 `# \6 ~
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以上为常用的函数!
R" _/ F+ B4 h3 ^8 \9 e还有很多,如有需要我把资料发到你邮箱里 # ~1 u) o" h8 P1 ~5 w" e2 ^3 r
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