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发表于 2012-11-13 08:48:12
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1判断语句
4 d9 c2 ]2 j( k$ x if <condition> then& q( b) a0 b8 J8 ?# \# b0 M
<statement sequence1>;
1 `- p& D- j& P7 K# x3 m( A$ o elseif <condition> then( |; ~. o: q* Y1 c5 K
<statement sequence2>;6 h& g6 i5 @% C; h( Y
else
R! X8 F O+ P: `& Y) R0 I <statement sequence3>;0 v5 Y" o2 F% y6 t, K" f
end;6 p& u( o$ D% s2 {6 K, l3 c8 y
如果分支比较多，用：
( H0 a, Z$ @0 D) e, C) r inspect <expression>* c7 [- P0 [# y e+ C
when <constant_list> then
; n H# ?2 n' q* v6 K <statement sequence1>;
) f0 E! t2 x8 r2 K$ r$ w when <constant_list> then
" a* K; W- M$ [ <statement sequence2>;
7 U* w1 o5 `! j# d5 G0 f ...+ c* F$ f; o, d) P) }" y- r
else9 t* N7 A6 \/ O1 k" l
<statement sequence3>;
! d! w% a) t/ t+ K# P3 N) E2 `8 nend;
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& c% [6 y( T' J% X0 k0 e8 A2循环语句
/ x$ F2 V- U/ B (1) from <statement sequence1>
, U% ^9 j9 T% @/ Q3 P until <condition> loop- H. T' [' L. A n1 k) G( E! v
<statement sequence2>;: Z- e3 d- h) e- }
end;6 p# T' q3 i5 b k
(2) while <condition> loop. z8 o/ V2 P& T9 Q* r
<statement sequence1>;6 v9 X7 g1 z$ x
end;
8 g$ B! ~5 Y% B (3) repeat 6 e0 X6 x0 j. v* g& Y6 D
<statement sequence1>;
% R. N% a$ d& l4 _5 N+ ~5 ^4 L1 D until <condition>;
2 k% S, i/ D3 ` (4) for <condition> to <condition> loop1 m6 `2 l/ }) I9 e
<statement sequence1>;; X9 S2 Z! B$ C2 b0 p1 t% E1 m
next;
! l- q1 h5 {* a" m7 v# Q, N3中断语句
$ e, t {& `! C* M8 p* m waituntil <condition> prio <integer expression>;0 `5 {# L( w# j/ A
% X$ M, `1 C& d. S
8 p' H) U+ V! `" `9 p以上为常用的函数！
- D) Q9 H, Y. O, m" E4 Q, @还有很多，如有需要我把资料发到你邮箱里
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