|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句9 j9 j. w$ z4 o+ m# h' ?1 U' K |6 B
if <condition> then
; q, ], F2 G; g. k <statement sequence1>;
; P5 s' ?* Y0 |- M l' s elseif <condition> then
7 F* {# z' p4 j+ Y' S <statement sequence2>;
/ Q; L: P u' B$ s3 P3 f- x( b( P else ; B H9 j1 F6 L6 `" Z
<statement sequence3>;0 i( u: s- z8 [/ r5 g- I7 l
end;
' u3 W" a; ?, I+ d7 f1 U* W如果分支比较多,用:& m: A+ Z% R8 t
inspect <expression>( G/ y$ A$ x" p$ ?
when <constant_list> then
0 c2 e- ]" J, c <statement sequence1>;
: ~/ k1 F% E6 \6 M* m' x1 @ when <constant_list> then
- v: b8 K& }7 X; R3 ~4 S1 I( \ <statement sequence2>;
- Y! i0 a5 M# h! X ...
! n. k7 E! B/ E( t/ C# } else
- c3 u& g1 k, G" ~ <statement sequence3>;4 F+ ^3 u/ U' D$ H7 v3 G4 X: I) A
end; R8 Z! f* |! ?# G0 Q) j" t; t& E% V
: B! q, h) C( n- m5 m: }
2循环语句4 B+ N: a: g4 j2 i
(1) from <statement sequence1>
& T" X5 L0 C# b0 _7 s until <condition> loop
! H i. h* O7 @9 [* a, L <statement sequence2>;
+ a* {. P& U1 A. R6 o) X# O$ h3 H* y7 @ end;
' r8 U+ M" L8 B0 z5 U" A. M0 r (2) while <condition> loop0 T1 W9 ?9 D7 ~0 A$ \9 {
<statement sequence1>;4 Q+ A+ e- T+ E: z" j* r+ _8 ?
end;
% C# f6 H' G" }$ i$ T (3) repeat
Y3 G' `( ~& ?3 F <statement sequence1>;0 m/ D1 `8 N8 V
until <condition>; H6 _% l/ y- w' F" G2 n% J
(4) for <condition> to <condition> loop
$ o6 V) x2 U1 h0 }- R; l <statement sequence1>;
! d; x+ s9 x7 h$ V next;! o6 [4 e3 Q/ a% T4 K. E" E
3中断语句
# x9 v' S2 L$ G2 [/ p waituntil <condition> prio <integer expression>;
5 b0 k. ^# P( _+ W$ y' H+ Z. G
; \/ }* U3 R+ s* j' F7 P, L6 q+ c, w
以上为常用的函数!3 D; c, X% m; ]: z
还有很多,如有需要我把资料发到你邮箱里 0 g6 W9 ?2 N. Q4 s0 Z1 y3 k
" n) U' e0 ]9 Y& u; \1 b# G7 F; W7 E' b8 x0 \/ D% B2 Q
% z- D2 I! D" o) J
8 Z, C0 `) ]1 |- k6 B2 f# S8 `& K9 ~* A* G0 a
7 a& t$ b z5 `' j1 |0 r+ C. G3 \
' z( I; n( l& q* i
2 M' ~6 ~% K+ K2 q # Q, V, H1 n( \
|
|