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发表于 2012-11-13 08:48:12
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1判断语句
: N0 c9 `" F- `: I if <condition> then2 `+ d( `; W" @5 f
<statement sequence1>;
4 Y+ S# w* G$ P" i elseif <condition> then7 H% q; T! u$ { d1 ]0 T+ E
<statement sequence2>;7 o- I! v M. q! I2 k4 { P* M
else 8 y' R# z$ R! H; H. J7 N
<statement sequence3>;' @/ P. \' e! `+ s
end;5 i. L9 _1 ]( Z' C b) p6 h% H
如果分支比较多，用：
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when <constant_list> then' Y. Y ^! E. A& I# m% w
<statement sequence1>;
! r3 v( M! O7 l; M when <constant_list> then# G: Q" G3 O4 j+ G( i y( }, `
<statement sequence2>;
" M1 e; p4 A) A' @' j' | ...
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<statement sequence3>;
5 b- N0 z& Q" u* T/ W4 Y3 ~end;
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' ~% }) @1 G8 E! D2循环语句
, N/ D% X4 A8 s; M* ~ (1) from <statement sequence1>
& O! o' t& _* t- t5 k: l. X7 @8 n until <condition> loop
; S2 i( `! w. M3 B2 x; ? <statement sequence2>;5 r, [* o6 I8 @ O
end;/ e' Y4 c: \ o" ^' O% G' m+ {
(2) while <condition> loop# ~$ \/ t/ e' _3 j0 |% u, J
<statement sequence1>;
8 r1 g0 [/ ^9 d; [+ F end;8 l6 E* v- s" y4 C. _8 f1 T
(3) repeat 5 i" M2 h4 Z4 P( T5 w: ~- b
<statement sequence1>;) Z: w$ |7 s7 f. N" S
until <condition>;2 T; Y7 L2 l% d1 |3 p5 a
(4) for <condition> to <condition> loop: i' k* e) ]9 t. M
<statement sequence1>;
# T; [$ q' [$ ?0 m$ q9 X$ r2 L next;) r- G% c5 k* b
3中断语句& u9 j( c/ l1 R; @* K
waituntil <condition> prio <integer expression>;
- P: _# Y p1 H% E% E) S! P+ i; }3 B {; w$ u) N, P
! f# X# \+ `3 T以上为常用的函数！
p' ?1 p2 O2 z, m还有很多，如有需要我把资料发到你邮箱里
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