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发表于 2012-11-13 08:48:12
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1判断语句
& m6 w% {! Z9 b- j' N. o) {9 T if <condition> then
) l; L% l4 j! o$ j <statement sequence1>;
1 T& `" R$ u$ q# ~# y elseif <condition> then
% Y! L3 N3 t! I2 \: w <statement sequence2>;
+ G! b% ~( [' k8 @" N else 4 R1 k( T3 Q+ Y! {1 f5 c3 ~1 x
<statement sequence3>; n. b/ o9 f8 o- x( X
end;0 b2 ?( i" v8 s+ D' V% N* Y6 J
如果分支比较多，用：
% r* Q" h' n9 u: m) z, ] inspect <expression>
8 d8 W( b! d! b8 @* T7 | when <constant_list> then
9 a; ]* D( `. O: M( w <statement sequence1>;9 W+ q0 q8 T+ H$ P/ f
when <constant_list> then# ~6 n. g% O" u9 t/ R$ |
<statement sequence2>;3 O# ?- P% D3 I/ a- \
...6 M: _" n9 ~) g
else
2 u/ D9 E' W" o" q/ P <statement sequence3>;
- D. D4 N: t) s O+ Iend;
! ], C7 E/ R+ u0 c9 d% m5 ^. h* j1 R# j0 r' \
2循环语句* X8 u( b0 i1 U6 h. m! p& z
(1) from <statement sequence1>
' \& k. |* o' |6 w: d3 h9 _& b6 _ until <condition> loop& ` {. z( i! ?! D
<statement sequence2>;
4 w% S. F4 l- ~3 c end;9 v) ]5 u. Z1 M8 H: a& ?8 W7 |
(2) while <condition> loop9 P( B1 K+ G3 b4 y
<statement sequence1>;8 [5 w) [ C; _4 R; B( O
end;% ~" Z" {: m& A* t# S3 ]4 V4 a
(3) repeat
F3 J' }5 W+ d <statement sequence1>;
) m% A/ Z3 E, U& \8 s/ ` until <condition>;+ p1 j, w- i" u
(4) for <condition> to <condition> loop% u0 U, ?% C0 Y( \0 ]
<statement sequence1>;
: C# [. ]" T& F# q' [$ Q2 C* [ next;8 {9 F- U! w1 Y4 u% F. d& f* D: I
3中断语句
/ u) p' n$ S' `( I0 h waituntil <condition> prio <integer expression>;
& v& F5 ?7 R- E, j9 ?
" H2 T# u, H. t7 `3 o" b) _# a) d$ ~6 o' @ o' X! D1 k
以上为常用的函数！1 o g& x( f m: B( z: c8 x9 N
还有很多，如有需要我把资料发到你邮箱里 7 G7 i7 O+ Y" v" G# }9 S$ [. \: ^
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