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发表于 2012-11-13 08:48:12
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1判断语句8 b1 Y7 k5 x. H4 R2 R) T
if <condition> then( u4 a5 {7 R' \" {2 t
<statement sequence1>;& f* q; x7 W- }9 U
elseif <condition> then* O5 a3 { j* d+ C- h/ h; ]0 {
<statement sequence2>;
0 @5 s; m3 z3 Q else
, ?& U" d; b0 q <statement sequence3>;
. [9 c' L. d) {& h+ l# t end;( M0 T( Q7 }0 R2 z& ]
如果分支比较多，用：
" p ~1 C' q+ ?+ r inspect <expression>' @+ p( t$ N% g* m2 M- F
when <constant_list> then
. o& m' o2 y5 s5 T. ?8 n1 v, F <statement sequence1>;
# R$ r& r; a3 ? L when <constant_list> then( H. `# S" N7 q- ]) y' p2 D
<statement sequence2>;9 W8 W' B8 V# a% L1 j8 X2 Y
...: q- Z3 U) H5 ^# z) w$ ~
else
! E& B8 g- B8 E* p <statement sequence3>;2 E1 X7 Q5 V8 ?* k; L- @& C& s/ Y
end;. j$ Z- \9 H5 s: P$ V# i7 I
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2循环语句2 o! v: @3 H6 b2 P! m
(1) from <statement sequence1>6 r1 E; s4 i% g( I
until <condition> loop! p4 ?3 _+ @) Y& m) s8 s
<statement sequence2>;3 T* U. ^ |$ T0 N& B: D
end;$ G! f) `# X9 y$ r9 @! ?: Y3 ]
(2) while <condition> loop
1 [3 E C4 H. B" ^( v <statement sequence1>;
) V6 a- ?8 C' u. w) J- M end;
) [& c( J: N% B. U; Y1 u (3) repeat
( G% q. r/ Z' ^' [, a <statement sequence1>;
8 Z& v# w$ o6 ^8 S' e6 |( i until <condition>;4 l( P- Q! C( w2 O9 B8 q
(4) for <condition> to <condition> loop2 V! @: {( h+ Z) R$ R1 M$ O0 k1 W% d
<statement sequence1>;
4 i/ g& ~0 K. f+ _# T next;
. s/ Z: l8 |# J* [3 g; w/ q3中断语句
2 _8 J- u; S9 v. q7 p7 T waituntil <condition> prio <integer expression>;1 L) o6 z6 H4 c$ D% R- i6 U
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以上为常用的函数！* Q. V: S8 a) e6 A; v5 B0 l. F
还有很多，如有需要我把资料发到你邮箱里 4 s7 \0 ^" b5 i$ `5 L0 _8 g
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