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发表于 2012-11-13 08:48:12
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1判断语句/ v4 E; N$ q/ R3 A* t
if <condition> then
# D( y4 S c8 U+ j5 S# @/ v8 L. m <statement sequence1>;
6 C5 V% p' G+ o6 `& ` elseif <condition> then _7 b& U# K* u. T8 A
<statement sequence2>;
9 }6 s6 R6 E. }7 @: q else / K( n& Q' t3 V2 ~( }5 a) s8 Z
<statement sequence3>;6 e7 w8 Y1 M" t g/ z* |
end;
, r3 Y x$ A1 _# f" _6 }4 a% y" n# F" H) b& Q如果分支比较多，用： Z: S1 g2 w& a# X0 I! l. y% ?3 X
inspect <expression>
" q! o$ Z3 t9 [* B: I! K) C when <constant_list> then
3 k- O6 X+ w. ~$ ? <statement sequence1>;6 P* D6 z3 T2 b
when <constant_list> then- U8 b9 {% r9 q4 Z2 n
<statement sequence2>;
: B* F5 o5 l0 } ...
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<statement sequence3>;/ \$ `. U1 w% Y/ y4 Z4 p* R( ?
end;
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2循环语句. Y; b* l: p5 M& _. i
(1) from <statement sequence1># y) z# u6 T7 D, ?' U
until <condition> loop
) Q3 p3 {# l$ I/ J <statement sequence2>;
% S+ n4 f$ V! ` end;$ ?9 _7 h% T& q% k! u- n; x
(2) while <condition> loop
$ L, V- y. }$ ]. [' i- `; e& t <statement sequence1>;
) `( q4 @8 ~2 T, A end;
+ C5 e0 d3 }7 s* ~ (3) repeat
3 |4 ^; b% M3 Z* ^3 r8 p <statement sequence1>;" ^; x! j! |5 b& _9 u7 ^) ^
until <condition>;
4 c! b2 Z8 z$ Z* ]6 l( h (4) for <condition> to <condition> loop" y* |* f2 m' m9 i$ a' |. n+ V
<statement sequence1>;
0 g0 h4 f0 b5 q$ N# P0 Z next;4 \ C& f4 \3 }! w& m8 L
3中断语句- K1 q& S( {/ W; |7 x
waituntil <condition> prio <integer expression>;8 m0 A- D! G- E4 n) o z5 v
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以上为常用的函数！# I, K$ Z4 B: r3 e5 a
还有很多，如有需要我把资料发到你邮箱里 7 t) y [6 H6 v' q% m3 j$ W
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