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发表于 2012-11-13 08:48:12
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1判断语句6 U; y" }8 o. n3 l" U2 R- p m2 L
if <condition> then
, E& K; X: j1 p. J9 L <statement sequence1>;
" B& T- t) q" x. V! l! K3 b elseif <condition> then+ T0 e; D; S0 }9 W B& l
<statement sequence2>;1 G, l, i9 C9 N. @
else 6 k6 \; t( j2 i0 b/ \% v. W: @
<statement sequence3>;
# O# |: b4 s# F4 g' t4 y end;
) x5 l' c0 n; c3 l! k* o如果分支比较多，用：
$ W& _5 b# M Z3 {8 ^ inspect <expression>
( a. n3 D [8 |2 a when <constant_list> then
2 M' [! x2 C$ K: d/ }5 p% s4 z <statement sequence1>;
$ V# N0 q2 T5 T when <constant_list> then" x' ]. c3 U% w& a9 @
<statement sequence2>;
% N4 Y- M$ |" L$ a7 X( \ ...
5 r$ J8 Q7 l) t3 D: A3 o else d" Z& E& E: C
<statement sequence3>;
8 _9 |: F% ~5 h1 {end;
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2循环语句
6 i R; O% x1 b" ] (1) from <statement sequence1>
% Q/ L/ d# P" g# I until <condition> loop0 z+ w- o) |$ R+ z3 G- V
<statement sequence2>;
7 W1 ?! q, k) l2 C) h3 k end;7 e% b. ~ ]1 F6 b) m0 e) i5 v" d
(2) while <condition> loop! N1 H1 n) L( I: Y- k$ P: Q
<statement sequence1>;# v( ^0 d2 l5 e8 J5 ?, g b
end;
" i% m8 J0 V. |6 W6 @ (3) repeat
' \% |: n; o3 i0 v8 A, a0 ] <statement sequence1>;
! }* M) }! j7 v3 ^! i3 m: k/ \ until <condition>;, r; {% |! L Z4 ^$ i* |3 V
(4) for <condition> to <condition> loop2 p/ Y' r0 J5 j- i' P
<statement sequence1>;
q3 R" G! l: G next;9 p7 H" z& o; s y8 e' o7 g
3中断语句7 \: s$ {8 S _
waituntil <condition> prio <integer expression>;6 O* ]4 W/ e" l$ s
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: y7 e' S, N1 f以上为常用的函数！1 D2 R, a( G0 B# w+ ~+ y9 ^
还有很多，如有需要我把资料发到你邮箱里 3 O8 r- O0 \- c: d- e3 k% _
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