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发表于 2012-11-13 08:48:12
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1判断语句4 r( |" L0 `, ?/ C+ Z" ~# o
if <condition> then
& b# _# g7 l% \5 T2 w+ O <statement sequence1>;8 U0 ~0 w. y4 h# i
elseif <condition> then- n9 |& S% K/ C% {6 T/ G7 V
<statement sequence2>;6 J8 _8 |4 `, Q" I$ L D+ `
else
2 e' S1 G7 y/ P9 S% F <statement sequence3>;
& D) F3 y& e. q end;/ ^, A3 L, e$ ?: s1 W
如果分支比较多，用：
2 z$ X: H; D0 b7 `6 Y inspect <expression>
- G% E# m+ \0 O$ i6 F7 h* D0 g6 k. r when <constant_list> then
5 A: {) \ h, N2 }5 D1 U: K <statement sequence1>;
: Y+ r" h6 y: z1 ]3 A l' t when <constant_list> then
: ~2 X" n* D4 f <statement sequence2>;! ?8 i4 o# h- _4 L8 ]' b4 M
...
0 Y% O" u# Q/ ?% }- M0 [' e5 d else
0 v- [# O: M8 `; M' z. p" f3 e <statement sequence3>;3 u8 Q1 d3 W K0 `: b5 C
end;
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+ {" f1 h/ j' H* A2循环语句 t& X% j! @3 _0 G6 A0 M* U) q- U
(1) from <statement sequence1>2 _7 ~( a, M2 }+ d7 H& r
until <condition> loop
2 Y8 ?3 r. K3 c& b <statement sequence2>; o0 R& D6 t! E4 i: b
end;
( ~4 U. d# l, X/ z+ u9 G (2) while <condition> loop
0 ^$ w* i7 H( f; w& d/ f7 q <statement sequence1>;
! n) S) F, @" O, G, J8 U end;# q1 }, i7 e9 S0 a3 G E5 j
(3) repeat 0 t% [& n# o8 J- f1 g
<statement sequence1>;4 k8 G! q( w6 `! c8 }" R' I' ?
until <condition>;
2 t2 }! C' }& ~5 X, S8 R( w L. u ` (4) for <condition> to <condition> loop
8 P/ b8 M& @ g R+ }7 g; j <statement sequence1>;
5 P6 O1 H5 ^ H$ \. z next;% r& m- _+ [5 ~% d' E! h
3中断语句
" P* i U# |- W- h' ^ waituntil <condition> prio <integer expression>;
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以上为常用的函数！
% e3 z3 t& U" S! X还有很多，如有需要我把资料发到你邮箱里 6 x5 x) M9 ^7 s$ P6 R2 Y
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