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发表于 2012-11-13 08:48:12
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1判断语句; r! q3 X; }6 @
if <condition> then0 ?4 O. ?2 T% F) {; L
<statement sequence1>;& W/ I2 ]* u; I0 `& V
elseif <condition> then
% U+ M2 E/ `6 g1 q <statement sequence2>;
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<statement sequence3>;
k. o4 k* m7 a: g end;6 m+ y. C' |) l1 }; g+ T8 T; ~
如果分支比较多，用：- [5 f4 b0 t- c7 j
inspect <expression>6 L9 I2 y3 L1 {, P
when <constant_list> then
: C! Z9 N$ g6 ]$ U6 M1 s& o <statement sequence1>;$ P/ E$ H6 p0 a
when <constant_list> then
8 d% T1 x0 R# a* z* a <statement sequence2>;; K9 Y1 P$ o$ J( ]$ Z
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else; P; a! k; m+ |. i! H* R% O/ O
<statement sequence3>;7 d" D1 B$ F7 x6 ]- W8 `' G
end;/ e7 F: W, |- W6 j+ N" I3 ^
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2循环语句, q1 _/ V0 ^; k( l" ^: f
(1) from <statement sequence1>) I# s! J/ Z" v( }" J
until <condition> loop/ x) s2 j, o( Y9 I% J$ o+ t( N0 `
<statement sequence2>;
' F$ w' C" S2 m$ j$ r% I end;6 A6 ]5 z" e E" A& s2 P
(2) while <condition> loop' z$ f4 I$ Z1 ?: ?+ n [2 }
<statement sequence1>;
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(3) repeat . P8 j6 A( ]6 ^! A6 i& m( q
<statement sequence1>;
, r8 p( t9 O; x* E2 w; T# k* u until <condition>;
0 h4 x" w6 M8 a# a( U' _( d- c (4) for <condition> to <condition> loop
9 H; C1 l2 j6 F, ]" G- n <statement sequence1>;
! J0 J+ C! h, e& t- I! H) L next;
! I/ _+ T; N9 i9 H, S2 o5 \3中断语句
( M4 C# x, q# R, P waituntil <condition> prio <integer expression>;
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% z3 ^! @6 t' V( @' } \- ]以上为常用的函数！! d# o. ?2 o5 q! y
还有很多，如有需要我把资料发到你邮箱里 * Q# p! Y6 q& T+ S: l
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