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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句! I# F: b7 a6 C4 K) f
if <condition> then8 g5 U" W* F# @0 s9 B+ ?
<statement sequence1>;
8 g( ?& d; X$ b( {3 c; F4 e# y elseif <condition> then
. z, H9 H( K L) s <statement sequence2>;. T/ p: I5 X6 V3 r6 Z, f
else 2 n1 L- l/ ^- e( M) C& ]! l
<statement sequence3>;( k8 m/ ` A# N
end;3 W) P! F6 H1 Q! t
如果分支比较多,用:, [ J9 b0 y( I7 T
inspect <expression>- |9 Y2 ` X, D5 f
when <constant_list> then
- A6 i) x7 ^7 W0 m5 @- e <statement sequence1>;
" P, i9 E. N! d when <constant_list> then
/ l9 n; `6 J2 J& K* e+ E* C' t <statement sequence2>;
* d$ }, k1 N" N% V. s ...
8 y; r4 ]: ~$ R6 \* m else# s: Y, V% \9 R2 i4 Q
<statement sequence3>;. K. o/ u# |, L+ q
end;
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3 K8 O: u& V8 s/ n2循环语句
; O; m0 _( `' h v2 Y9 n# g/ E a9 ~. A (1) from <statement sequence1>
7 W8 W, U0 P+ h) z5 s( z) ] until <condition> loop
" u' u' e& A7 v4 E& d9 v3 W3 } <statement sequence2>;2 A+ w) X$ _9 g+ ? V1 V( C3 n" q
end;% M5 I( Y% W% t: g
(2) while <condition> loop+ o |4 ]5 i" X
<statement sequence1>;
& w1 ~0 j) I8 d7 W+ j% _$ L& u; E end;( G8 u7 u7 L- V. m2 c, q: L( g
(3) repeat
. Y8 |4 r. q5 k' S' `$ b: { <statement sequence1>;9 |3 L' v5 m4 S; u, U
until <condition>;: p( t& b3 v: d
(4) for <condition> to <condition> loop
; o8 V9 x! E! ^! D( Q <statement sequence1>;1 a$ X% j5 L+ m* c
next;0 S" B1 u7 S5 Q
3中断语句
: _3 I- \* R$ P* C waituntil <condition> prio <integer expression>; n5 A* J! b- ]( N6 ~$ [. _# V
* f& M, j! o2 g& g
( B4 y' Z6 p& h4 L8 V( Z3 J以上为常用的函数!$ Y M8 X4 A1 O! j& s' X
还有很多,如有需要我把资料发到你邮箱里 . p" R- |7 f/ y# F }
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