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发表于 2012-11-13 08:48:12
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1判断语句& E- ?0 p# O: ]. R
if <condition> then' k& ?, j, v! o% o+ j
<statement sequence1>;
9 s/ ]# v+ c$ g& k: r+ n+ f. c elseif <condition> then
$ y# T5 g0 g; r( r- ?3 _ <statement sequence2>;
% ]" D- M z: S Y3 O else
. ^4 K5 R7 v' r) S0 S3 s <statement sequence3>;
! L5 y* t3 K6 \& G$ f8 i end;
) W; H: i4 T; Q! \" S: w如果分支比较多，用：
' u- d. ]0 G3 w0 X" R% Q% [3 n3 l inspect <expression>. w) f+ P9 A3 d6 m
when <constant_list> then3 s8 i8 j0 q H; J
<statement sequence1>;
% T$ K) m& V) ~6 X1 M when <constant_list> then5 u/ r% }7 o" h* y& t, X
<statement sequence2>;0 g1 x; _, X5 W! R
...% |$ U5 o; i% T2 V4 N* V" \6 C
else0 a6 K2 Z& A' Z$ i8 e G
<statement sequence3>;
6 Q1 U3 p3 u% |) W, O6 O& I# ?8 ~end;
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2循环语句
' a- V4 H# ?( c$ a (1) from <statement sequence1>) N1 F/ Z# F' e* F# k2 ~
until <condition> loop
. s* u5 U; A( c9 ? <statement sequence2>;; F, y3 c) b- R
end;
- L3 X5 ^; J, J# y; V) q- g (2) while <condition> loop9 t% J) ~0 W, e. L; \
<statement sequence1>;
' ~5 y$ V" Z. z0 v5 p end;
) |, @& _' ^6 P: H' `7 b (3) repeat , a4 v/ r" p% y9 ^8 q
<statement sequence1>;
& @4 h0 W0 y6 v* P$ F until <condition>;3 M2 l8 n" \+ E
(4) for <condition> to <condition> loop
6 h. J7 Q: m" J7 F5 } <statement sequence1>;
& o7 ]$ K/ W6 X2 q% T# T next;
, N2 i1 X H* U( g6 i% {4 V9 Q2 D3中断语句7 K$ ]3 l( v$ t" X
waituntil <condition> prio <integer expression>;5 x) X3 U- |* A5 I- y; O! G
: a# Y( U$ {$ e3 W3 |* L4 X1 O2 z% K/ H# o7 u$ a
以上为常用的函数！
( ?" r3 {2 l0 w% D6 `还有很多，如有需要我把资料发到你邮箱里 % |1 E! @' _* B S+ b6 {* V" u
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