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发表于 2012-11-13 08:48:12
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1判断语句# Q* c; m# I6 @4 x% e& [: Z" X
if <condition> then
, Z! F5 h( I# Y <statement sequence1>;
4 s) t/ W$ C2 f0 n y3 G elseif <condition> then, a; g. x: I1 @
<statement sequence2>;
1 Z0 r; C( t6 t8 ?4 | else
4 _; g$ P5 ^( e6 L5 h0 K9 j7 d <statement sequence3>;8 L8 Q! e( o) x8 N$ S5 y4 [
end;
; ~/ e" a8 Y- w, U如果分支比较多，用：
# j) M' G& [+ D D- W9 l) B inspect <expression>, M' [- [& d( v1 Q+ z4 o
when <constant_list> then
( I/ d+ u% J2 g- N d% [1 z4 A <statement sequence1>;
2 g! L& G0 C! D- Z5 i( U when <constant_list> then% o! p9 [- a* M; F! ]' s
<statement sequence2>;0 t7 J# d. T+ C, R
...; `/ E( L( F- s2 b5 q1 B
else, |. g3 @$ s J Y* G5 [
<statement sequence3>;; h. U- k+ k; y: G! v4 D
end;
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, \0 p# r" {3 z3 ]/ @* u( C3 o6 g2循环语句9 F: W8 Q$ ]. U8 z4 f4 a
(1) from <statement sequence1>
$ }1 U1 e$ U8 H9 c8 w until <condition> loop
% j+ t" y, d7 [' n$ }5 L <statement sequence2>;- U& }9 Z/ e! }$ N$ \
end;6 |4 r. M4 P$ T7 Y4 Y& ~
(2) while <condition> loop" V& I c2 u; L' v+ I$ c7 X
<statement sequence1>;
6 _5 k5 |' k, m9 p6 ~$ {* B end;
" N0 R6 u, O! e6 G% t (3) repeat : Y- |( Y& p8 w$ k5 o, D( |6 I+ k
<statement sequence1>;
' e5 ^4 J- s+ |' S1 z% j+ O& l: x until <condition>;& A" z H! h1 o7 X
(4) for <condition> to <condition> loop
: a; O. U( l6 K n t2 e9 @4 m <statement sequence1>;
1 E5 A7 R/ o b3 q6 k1 `4 u% Q next;' K3 z/ @7 `" g# f# ]
3中断语句
Y& h+ i' G! N7 f5 H( U waituntil <condition> prio <integer expression>;0 R* f2 y! {2 m
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( a8 V) J. d! l' D+ T6 p以上为常用的函数！7 C8 g* c6 a% n2 a2 U- a+ D+ G$ W
还有很多，如有需要我把资料发到你邮箱里 + j7 G' W4 f. y; b( Q% O$ e" U
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