|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句2 p% H3 g5 r! u: i
if <condition> then& F* t% f2 C/ V
<statement sequence1>;
, \8 c& O0 S; y! p elseif <condition> then$ B: m3 S4 e: S5 }
<statement sequence2>;5 K; X; y2 u$ o) V
else
5 A# ~1 e. I) G7 G3 N( Q/ v <statement sequence3>;% J# g# e9 Z" Q* Z. \4 t' G
end;) l/ ?7 j x) P4 l/ a; X6 l4 z" j
如果分支比较多，用：
7 I$ s$ n* F3 _6 h( ] inspect <expression>
) H8 J6 e* B t' X" z6 O. B% Z when <constant_list> then
) {" T, D8 s; m, e0 J- a8 J <statement sequence1>;3 z4 z3 p7 \! H: ?* w0 A
when <constant_list> then
4 w8 [) e/ A; [$ B4 I <statement sequence2>;
6 a9 y5 e( w+ [9 Z- Y. H8 O. \- o ...3 H1 p% b( ?0 V- n
else$ H) A8 s6 p( G. c( y
<statement sequence3>;
% a" K j0 P# \3 r2 X3 Iend;
& Q' E3 z1 e2 D8 a/ Y8 G. f& w
: c8 |( l, K; j4 x: l; u$ M2循环语句" S4 I8 P9 C2 X' h( H, u, g7 E
(1) from <statement sequence1>
- t# i! g/ J$ W; s& E3 O0 f until <condition> loop
/ s' _" R5 _' g2 f) r4 E <statement sequence2>;
, o" i9 ?, E- |. b; x- R3 k$ B end;7 `: G0 \2 ], w
(2) while <condition> loop e1 m- I( d' X' }
<statement sequence1>;
6 T+ g9 y6 d; W) I2 w1 ` end;1 h* W1 ]2 A4 X' e/ C8 T- T* z( v
(3) repeat 4 h& i# \; O7 e2 r
<statement sequence1>;- `% i: k8 V( |4 u4 j7 x
until <condition>;7 `( @0 z& J3 m8 P; x, ]. [8 ]
(4) for <condition> to <condition> loop
; A$ q1 o4 `' B: e* F <statement sequence1>;
4 _0 t6 d: A$ ~& u0 M next;
* f$ [1 f3 ]6 Q7 F3中断语句" T( a; g* F [6 A( J) n) S
waituntil <condition> prio <integer expression>;
1 A; m: \- |4 h/ Z* G! Y# G G+ w# M+ z* d. ?3 R
+ y6 Q3 o! `7 z# z9 Y: i" Y. |
以上为常用的函数！
3 ^( C8 g! K* T3 S3 ]% j" |还有很多，如有需要我把资料发到你邮箱里 * d5 T8 F) E+ I9 S V) @/ r
9 \, L- q& r7 M. l: H) Q3 c% l3 D, x. j) R f. D. a
' L# b. Q, F; G4 h; S
* n5 C. g+ Y5 h1 ^
/ j% ^1 M5 B$ K" @& h- V2 T- ]* V, l" N! R# r) v- |& T6 X
/ n$ e& x- o/ r; E9 T
/ G0 ~+ d% p; E# U3 K# M6 u B
9 |) S! n, u. A3 d/ Q# _ ' @/ }- \, f9 G( G, _. k
|
|
[复制链接]
