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发表于 2012-11-13 08:48:12
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1判断语句9 a' a1 z6 A( A
if <condition> then
! x/ g$ X7 N9 t0 Y9 X- W) N% L <statement sequence1>;
8 i) n; u9 C4 i8 ?/ x elseif <condition> then' h$ j" E9 V3 Z! x/ Z4 Y t
<statement sequence2>;5 W% P1 [/ R/ o% _5 D, N" |& q, k
else " R& X8 ~7 |' Y
<statement sequence3>;
2 a8 _7 ~7 M9 u8 f! t9 B$ f+ p9 u end;3 f7 V( U0 V# l- j) {
如果分支比较多，用：' _6 u. L# y( X. v; i+ g, m# \6 X
inspect <expression>. q" R3 r/ L- l. j3 U
when <constant_list> then( ^7 _, S: B/ e4 O ] s6 T
<statement sequence1>;
) ]+ }8 A6 t. d: g! C( I when <constant_list> then q& i3 D/ J: G3 K }5 E. v0 a& C* L4 \
<statement sequence2>;
" i6 p, Z C' z4 ?/ h6 Q6 ~3 q ...
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<statement sequence3>;
6 p0 }; k* c: G* J! @' A1 Z& uend;
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1 L7 j( {- h* s3 Z7 t; \& P( \2循环语句
" s$ m! U- h3 g1 g1 ]8 } (1) from <statement sequence1>: C# X# \# G. i. k
until <condition> loop
! r' e8 K8 I, K4 L- k* { <statement sequence2>;: ]. l+ Y( N/ r0 s+ R
end;- v2 z2 \) ]4 D: M4 k5 i, x- e
(2) while <condition> loop
3 P4 Z) m4 ~5 _, g [ <statement sequence1>;
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(3) repeat ; r( c& e: f! @' O
<statement sequence1>;
, C. E: n& O: g. r/ Q+ t until <condition>;2 [. m+ J# h; S, M
(4) for <condition> to <condition> loop; ?' `. | y8 Z
<statement sequence1>;
8 c& V+ T' z7 p7 L3 v/ I next;% S- Y4 T8 _+ }6 ~: w. W! H3 J1 k( e& V
3中断语句
- {% g' w# @7 E waituntil <condition> prio <integer expression>;
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以上为常用的函数！8 I+ n0 S+ v9 X* o6 {
还有很多，如有需要我把资料发到你邮箱里 4 u! C* d3 T: L& d2 Z1 s
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