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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
% z) c/ i4 H! e7 X5 z if <condition> then
! w+ E8 s7 ~' y8 j1 T6 e <statement sequence1>;1 @, l8 K/ `) Y6 l/ C
elseif <condition> then
; |% N8 q$ L v1 y+ h0 V: n {5 j <statement sequence2>;& P5 O, Z4 x2 E6 p
else ! u. T0 k* Y. z" r/ F( l
<statement sequence3>;
! B* v6 j4 ~% G& e( V- V end;
8 X6 m* K8 }3 C& v/ E4 f$ O5 g如果分支比较多，用：
- d0 n4 v" ?, `; x+ H& ?8 ? inspect <expression>
k7 `( q1 ?3 p* u6 J when <constant_list> then6 z' B; a' W0 m# s4 J( Y5 D& g5 g
<statement sequence1>;1 j' q' h) N4 |" h9 r( j; m
when <constant_list> then
`3 x0 l: ^2 @' u* y# n <statement sequence2>;
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else
" Q P( e; Q: \; L3 ~ <statement sequence3>;
3 v3 u% Y2 W0 Yend;
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2循环语句
- x7 l4 b! Z B5 p- Z (1) from <statement sequence1># `1 {0 V+ N l& b- H4 }/ ~/ K
until <condition> loop$ {: D6 w. ?1 P
<statement sequence2>;3 c: D- w0 V* \' P6 `, @: W
end;$ H& w, n( B5 v2 D; ^: D
(2) while <condition> loop
. w' [- |4 g. W <statement sequence1>;
0 i8 d3 d1 m0 a3 v& h5 o4 F d end;
" [6 R' }" r8 g3 q, R (3) repeat
: z# H* I! C$ Z& [8 s4 b$ c <statement sequence1>;% N8 t, d, L" m0 q* C* U: J
until <condition>;
6 y* v5 y F* @% m2 k3 t6 Q7 `( v$ g$ v (4) for <condition> to <condition> loop3 J' I' R, }4 k$ z E! b- y2 F; R4 R
<statement sequence1>;9 e6 b( {0 k1 w- D0 q' p. j
next;6 ~2 g3 \- q$ J- j" E! y: ?
3中断语句
' l1 k: \/ }2 j9 \* q6 u8 z waituntil <condition> prio <integer expression>;
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0 U l+ Y; `& [5 }! h0 z以上为常用的函数！/ V1 W' `& H" N& Z& u/ e
还有很多，如有需要我把资料发到你邮箱里 " _- u; T" m, x) q1 e
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