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发表于 2012-11-13 08:48:12
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1判断语句8 b0 J5 E0 M- j
if <condition> then
; C$ z" Y6 U% Y; t, Q/ U0 X+ j <statement sequence1>;! v8 L3 f1 r8 C7 _5 L
elseif <condition> then+ K) @2 e/ }1 }4 Q: v8 r' j4 A2 o
<statement sequence2>;
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<statement sequence3>;
# ]0 H# B8 ~# A& w2 {. V! m' T end;
3 O1 x* D; Y9 C1 f1 C如果分支比较多，用：
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when <constant_list> then
2 t3 d- K: Q- \# T, V <statement sequence1>;( K0 |+ x' [1 o. o
when <constant_list> then! u# A7 f1 m; W7 H+ Q- }
<statement sequence2>;& x# [* }' H$ P! e6 T
...
/ X/ e4 P" L/ R0 ]7 ?; N else
( n! R s1 [0 k <statement sequence3>;% V' u/ ~* P; m
end;
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/ E; I, x( z2 Y x" B& p+ `; N5 i2循环语句3 w9 U3 O( Y6 C' g
(1) from <statement sequence1>
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<statement sequence2>;
8 E% v1 o* N) ~ end;
2 G. o! P2 @. K7 G+ ? (2) while <condition> loop
5 b1 h1 O# \' V$ R) U <statement sequence1>;8 F! R, n* C- m E5 a, r3 n2 a
end;3 y/ |# b6 T: U, h) X# S% p) X
(3) repeat
) ^2 x; S0 j: M' T+ k <statement sequence1>;( O9 {0 z* q& [
until <condition>;; l [% y/ z: L) H; Q d" I, e
(4) for <condition> to <condition> loop0 x" a" T ^8 l
<statement sequence1>;
" w5 k2 o* n0 x1 g0 M) s next;. a* T7 g9 ^2 y$ o3 ?+ z! E
3中断语句
, R9 [: _6 ~8 A( @. F9 S waituntil <condition> prio <integer expression>;# E) U5 F. t' S& Z; y- [4 ]4 c
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以上为常用的函数！
$ x. k& F* M ]还有很多，如有需要我把资料发到你邮箱里
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