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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句* U9 a/ U$ L$ j
if <condition> then3 w/ \4 t& W/ g, V; Y
<statement sequence1>;3 h. N+ ~; A& A5 C1 S
elseif <condition> then7 A3 F+ J/ j4 F
<statement sequence2>;. `$ H- F3 k4 M: L
else
- c0 _$ N9 }9 |2 U5 E9 f <statement sequence3>;4 z" E5 ]7 }7 t- J
end;. \) Y. A# f- \( t4 V- m* ]1 ]
如果分支比较多,用:
) J+ u w+ P0 f, b- P inspect <expression>
2 {5 j* p* a( L; H& r% e: q' v3 i when <constant_list> then
. ]' {: J& \- j" _1 r/ {5 V) V <statement sequence1>;$ p% j6 x, C e' n" f& f- B! E" |
when <constant_list> then
/ k: ?' _2 u: h D3 v: {) k) J <statement sequence2>;
$ d+ _/ j0 [9 A& n: ^ ...
6 a- d5 Q) k) f7 ?' Y1 \* D5 S else0 E1 W% e( t* Y* a
<statement sequence3>;' R$ `! D* E% ]. F7 T) }: K
end;' Y! J4 @0 P1 w' d0 n: T- p2 \
' }" L) J3 R4 m5 ?6 ~( ]2循环语句
4 A8 }; U# F4 g, g! K (1) from <statement sequence1>
$ z4 E6 G% s$ j, M until <condition> loop
1 M4 _* I% i, O' ? <statement sequence2>;. U, c- J0 }( t/ k7 R0 `
end;
9 |# I/ V/ F, x9 P, {/ v( O (2) while <condition> loop3 {3 w0 Y6 v" o0 Q
<statement sequence1>;
% S4 v0 d" b0 @& ~/ S4 Y `" Q/ D end;
% a& o; b- g" G, Z (3) repeat
7 e: G( F% {4 \2 ?* w! Y& V, t <statement sequence1>;
0 I$ {/ u$ T! Q k0 {# e until <condition>;- A2 e4 O% A" D- n$ [* ]
(4) for <condition> to <condition> loop- c' D7 y! @( i- o% ]# `
<statement sequence1>;
j5 Z _; I# ` s' }! P1 u next;. ], y9 i1 \. f/ j( M/ ?! r
3中断语句
8 x2 N p+ z- m. V; V' I waituntil <condition> prio <integer expression>;
5 U6 @ `7 k8 W# Y. `% Y; I; U) b; S! e, Y5 U" n. @ ?4 @
. c! z) Z" `7 h3 E: j2 p以上为常用的函数!& E9 Z! Y n$ N+ k) s: ]
还有很多,如有需要我把资料发到你邮箱里
8 U1 ?% F; V) J3 r* ^- J( g( Z, L1 T0 i3 Q* M4 l- t( D6 P6 i
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