|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句
4 R7 P3 v k6 P# h$ r8 K% k if <condition> then
0 _" ~/ T6 m) `' l9 X' H <statement sequence1>;$ h! i# n. P. G
elseif <condition> then
' V& N9 Q" ?, d9 Q+ ~ <statement sequence2>;' v7 q% r! U4 _3 Z8 g
else ) q3 |2 W0 w8 T- S8 T2 X8 F
<statement sequence3>;
$ I6 `# k6 r! b5 k5 B1 j end;
+ ? }) L, q2 F* v6 p W如果分支比较多,用:! [' N2 r0 V1 f4 x% y
inspect <expression>( C! @* W+ T6 v, f4 [
when <constant_list> then
c6 T4 H' b2 W* {6 J) ` <statement sequence1>;/ ?* p2 H Y; q: b
when <constant_list> then' N" }: h) ~* k+ s# x
<statement sequence2>;
% G$ Y/ \' J5 l ...
" v+ b6 q/ Z; ~. y else2 d# X4 `2 q8 X0 Q( j
<statement sequence3>;# W, ]7 M7 j; i/ \" R
end;. r$ G+ I3 Z. [. j2 O8 u
- ]7 t2 K8 O# H G6 F# k: f2循环语句6 q$ `% J, t3 f
(1) from <statement sequence1>0 D0 |8 o+ s1 W
until <condition> loop
! Z& m( S4 o) \" M+ W1 Z, ~/ p% t <statement sequence2>;, _7 `6 f x7 J- |
end;
; g, [2 F% [8 O. Z+ g; h (2) while <condition> loop) P; }1 x# w# C5 u
<statement sequence1>;- k. p0 D9 o9 a9 }& O7 U8 r
end;
6 Y; g U$ ~& `* \7 R& B( C0 K (3) repeat
9 a9 V b! _9 V# S+ E <statement sequence1>;
" Y G- j( a4 j3 C0 [8 W& \3 h until <condition>;1 m! U% ]/ Z3 G" w0 t6 }
(4) for <condition> to <condition> loop' z* s7 R6 S! y
<statement sequence1>;
, U6 A D( h# c2 q( J, |% i next;" s/ N) U' i9 [" x/ {$ H8 H
3中断语句
8 S% G4 l4 ~8 r7 S) m8 a4 c waituntil <condition> prio <integer expression>;3 _; Y1 `1 @# P1 b1 n; e
% H+ Y/ l# N" K: Q) _5 Q5 W j
) k* Y5 `7 u5 s* M |" u( }以上为常用的函数!# @+ b: q9 o: Q! r T
还有很多,如有需要我把资料发到你邮箱里
2 x/ k5 A" U- c l: M- A& N& x: N5 r4 H4 P% i1 P f
6 c. D; q: t, s1 J8 i3 j
% n3 Z' \' D6 h7 Z * r0 E9 Y* P! n, t( R9 y
F( E, I: Z- t" H/ y2 ~
( p$ U4 l' Q! t
( i/ p" x# @% u6 B2 T' {0 B; M4 q- a3 y- \1 [7 J# Z
+ U+ M$ N$ @. a/ L
, n c" p" O: d/ l5 h& ]; m |
|