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发表于 2012-11-13 08:48:12
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1判断语句4 Q; ]+ ], N E, d0 Y; q
if <condition> then
# G o4 X& _, D# ?! j <statement sequence1>;
5 u0 J1 k7 ?; e$ E) b) j! X! Y elseif <condition> then4 e M) @: F" D6 `" j4 I8 E D
<statement sequence2>;( T( K( F+ X5 |4 e
else
: U! l8 z) s, m ?: z0 k# K <statement sequence3>;; L9 v7 g1 L) A3 ]7 H; z* j
end;
, g# i7 O& U4 _. z3 \7 G* {5 i如果分支比较多，用：
" y: u! a6 Q' U9 H" l inspect <expression>1 g0 Y* a, N: ^5 m6 w+ ^1 L5 K+ H
when <constant_list> then
( x; {+ r4 b1 ^- { <statement sequence1>;
, o. ]/ g1 ^4 f! C5 ~2 p when <constant_list> then& T, b& S' G# b/ T$ x; [+ G
<statement sequence2>;, p# ], r Z2 b+ c
...
, P. q Q1 |2 Z; X$ u: V else
3 _! [+ Q! T! m8 n! ^" G <statement sequence3>;' q8 I b9 _" U3 ]
end;
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2循环语句
6 v6 v! ^, C. h/ z6 y; h# [4 p (1) from <statement sequence1>$ \& B$ e5 U. Q5 m- O" P
until <condition> loop9 G1 n# B6 |3 A
<statement sequence2>;" C+ V; W8 x, ]5 |4 B
end;
, m r7 n1 p" z* Y' _6 a' l" P t (2) while <condition> loop
+ ^! d; m; m7 g: [ <statement sequence1>;# M- K, _2 h/ R8 s) Q( R2 X6 _3 l
end;+ _( p3 W8 e! Y+ {
(3) repeat 5 W. B% r3 m. \. V3 U* U% T
<statement sequence1>;$ y3 }; T" r0 G" | H, P2 X" L' t
until <condition>;
. x! E! E; Y: l9 } (4) for <condition> to <condition> loop" F2 M& M" Q% z' l
<statement sequence1>;
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3中断语句
- n4 B( ^& G! }/ j1 H waituntil <condition> prio <integer expression>;/ i s' W4 J- {
, p7 s1 i4 ^) i: X1 z) P) ~' m
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以上为常用的函数！
3 E/ Q& `6 C) J N8 _" P还有很多，如有需要我把资料发到你邮箱里 ! b0 A. a5 ?, a. g9 e3 S
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