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发表于 2012-11-13 08:48:12
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1判断语句4 L3 {9 n0 e6 f" D
if <condition> then
3 o( _, m8 r6 x- ~' }: r <statement sequence1>;
% q! ^3 G; o* X( t0 _! z elseif <condition> then2 W0 E' g/ E' O. t
<statement sequence2>;/ X* Z2 {6 x; X: T S% m
else
1 m& H9 {: w3 l- X <statement sequence3>;4 `$ [+ v1 E! j5 m
end;
$ ]8 I) y1 q* o/ [3 ]) O如果分支比较多，用：
9 G7 m, L# I8 {9 r9 ]# Y* a inspect <expression>
& f) E; s' B8 ?- j' N3 E' G5 o when <constant_list> then
2 I( Y' ]* H6 k6 G# _& T <statement sequence1>;. R/ h/ v% B+ |6 i* m# c
when <constant_list> then
! h% e0 w) M- Z' x* b% | <statement sequence2>;+ g/ B& R: t* A9 B1 X' O% g& z
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else1 ?8 F- C& J6 I8 y
<statement sequence3>;/ ?$ _( h# e7 G
end; V C9 [* t( f+ o
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2循环语句 z5 C* `1 C* A {( G
(1) from <statement sequence1>
/ j" ^ a' |$ N7 R9 w7 l until <condition> loop
: V; ~; }: b. i0 r- Y4 m8 F3 } s <statement sequence2>;
: _5 Z4 z1 n" p/ e) A end;
/ ?* k) E S4 S! P7 U n0 f (2) while <condition> loop
) f/ L: v0 e3 F! I l <statement sequence1>;
& { _! H, X) ]2 c. }! f end;) B7 i9 u9 H$ i) W
(3) repeat
! E2 G; @# l0 ~ m4 g1 y: E( i <statement sequence1>;, h4 Z. C6 `. \+ [8 z
until <condition>;
' X0 ^0 n* t" [. k$ j7 d (4) for <condition> to <condition> loop; B; {2 u1 N: @4 x k. |
<statement sequence1>;' b6 D6 ~2 Y n- u/ q% v
next; o1 O! d ^4 U1 C# S
3中断语句
7 ?. N+ m @& y. h9 v, { waituntil <condition> prio <integer expression>;
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; J. t; o) ~) P$ R6 H! p' o! E以上为常用的函数！) c4 f! L5 _2 Y1 ]5 V7 e
还有很多，如有需要我把资料发到你邮箱里 + K- l9 O2 j7 B" L
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