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发表于 2012-11-13 08:48:12
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1判断语句
0 S9 d& H9 p2 G4 n- |$ n if <condition> then
2 w$ [( E- W6 ], v6 _ <statement sequence1>;
3 o) @; B4 S c Z3 d$ f elseif <condition> then
2 Z5 ]+ s' v% S* c2 G9 s <statement sequence2>;6 p' r. C5 p2 a* L& o x3 k4 }/ `
else 0 b2 G8 A( T0 Q
<statement sequence3>;
- ?6 S! W" u3 C& u3 T end;% ?+ Y4 {* } }- X. u3 Q5 r
如果分支比较多，用：
. t; a% r. ~4 n. Z inspect <expression>
2 b5 F, i% O4 O+ ]2 |; h1 a when <constant_list> then/ J t* R; {, y4 K- a
<statement sequence1>;; n+ ^+ V) Y) u r4 z; X G
when <constant_list> then% s$ L$ c& [$ m- p y; F4 K2 _ o
<statement sequence2>;
2 [: y" @, m y/ O5 f$ }2 T ...
+ Y( Y7 V) @& k else
& @) `" b J' {1 f <statement sequence3>;
, ~, l: ^ k4 l$ I. e0 uend;' w5 v& R' K/ v" O# z3 S+ N8 m, Z
" z; p# w8 t2 I& s% a$ S& Q2循环语句$ X3 j5 X) R3 Z K" i; w( k! l
(1) from <statement sequence1> x7 v/ _% [( ~3 A
until <condition> loop( S+ n2 c' F7 w) E% P6 s8 ^) ~; x
<statement sequence2>;
! m: q$ Z; t/ ]# i5 f end;
8 i) L% ^: n5 J) Z3 W (2) while <condition> loop
/ G: o# v; R$ F8 V <statement sequence1>;; d( R( x: U9 a# Z1 |% f
end;+ H$ }( T, [7 d0 u
(3) repeat ' S9 k5 y& e4 w) \
<statement sequence1>;
3 j& x2 a& \' j0 Y& `! M L V5 G9 p* w until <condition>;
0 C* V2 o( Q; C! E4 j+ H+ C (4) for <condition> to <condition> loop& j5 C( k( c" m, {# }5 L
<statement sequence1>;
4 u; t) Y% {1 J5 X) k5 s/ J6 {" V next;
+ G/ d4 A8 X6 n' @3中断语句' j, ?. l0 o& e1 r, U! y
waituntil <condition> prio <integer expression>;
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以上为常用的函数！, i& w7 T$ p$ _; r
还有很多，如有需要我把资料发到你邮箱里
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