|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句
" N! K/ ^8 K) H# Z if <condition> then% u6 o3 @' v5 a" A& Z) d+ R' f
<statement sequence1>;
" R" D: `4 x# A5 d! _0 V$ G4 m elseif <condition> then
/ O( ^" t, J5 z$ q <statement sequence2>;; g9 o6 n5 G" q. T5 h
else 4 I6 T" F2 p: b6 C8 i: t
<statement sequence3>;
4 O K9 y" ]- I5 f# `' P a+ |. E end;
! t) x; y7 Q- R# _9 R3 g8 g) t如果分支比较多，用：
3 Y* _' ]9 i5 A, H9 K inspect <expression>: H4 r, Y' I( ?. A
when <constant_list> then
+ F5 `4 k, [+ }" B/ m <statement sequence1>;
. h+ a' ]2 y: o$ C1 f) C3 o when <constant_list> then
2 i& b' z: \/ x7 t0 b; `/ | <statement sequence2>;
' V' z: M& @- D: ? ... m3 w7 y8 `& ~( x3 ~4 Y
else
7 Z0 b* [2 V9 G' R$ g- A <statement sequence3>;! c6 b4 I( B1 h! T, D, \- j/ a$ y
end;4 o! n: z& e5 D# L
7 W) I/ [7 l, J4 a- v( G e2循环语句& W2 q$ I5 k, h+ i
(1) from <statement sequence1>3 @- C0 O0 A0 f
until <condition> loop# J$ P0 _/ B" C) z' N& z
<statement sequence2>;
6 ~6 {/ y$ N9 ~$ t& o* i. ^ end;! |* E! d8 A' `* O2 ^# }2 V
(2) while <condition> loop
& V+ c- `& m- R4 D% j* b( Y <statement sequence1>;0 h8 m0 F; M% |$ _; j/ B
end;) j% N) `5 r' c% j" @- Z
(3) repeat
9 {3 [8 |9 V$ W8 q' g' u <statement sequence1>;" }2 d7 h& }( H6 w! q
until <condition>;/ f% o3 U% i7 q* n
(4) for <condition> to <condition> loop
/ `0 m1 Z& e% Z! O$ {6 x <statement sequence1>;& G y& y3 c4 W6 G
next;! z- g) Z- l# P% I' I( u3 m3 k8 _6 Z a; _
3中断语句
. B3 [) G. v7 |" Z* y0 m/ o v3 V waituntil <condition> prio <integer expression>;- ?; ]+ x& d1 X. K; \
, L- M, ~ m% T9 P
& J- b# r3 b; G: Y/ I4 v以上为常用的函数！
; R! y2 v9 ?3 c0 F2 r6 }还有很多，如有需要我把资料发到你邮箱里 * z3 [% S$ h( d) |, D& r6 R
$ K6 E0 L9 e9 y# L# M/ R
/ `6 ?4 _: x- m8 ]2 Z* \2 a, h2 T
. d8 V( h, @0 b: Z0 `. U
" V# _! b* ?, j1 i, v* g; E7 t: z+ z/ I$ [6 [; `9 T f" e
/ g' |- _, D7 z. l, @# `+ ~, o: ~5 @/ r3 h, k( K7 B( c1 g8 @
. P" X3 W( O/ j+ q4 m$ _
9 U! O5 y X7 U8 \$ K2 {) @* s' V7 f
|
|
[复制链接]
