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发表于 2012-11-13 08:48:12
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1判断语句3 L# q/ o1 n3 F7 ^& T: C
if <condition> then$ ~6 d" z. l* P8 V
<statement sequence1>;
7 a1 g0 U; B7 y9 ]! u( W G4 N elseif <condition> then h+ U, X9 |& `8 h
<statement sequence2>;
w6 G5 J! M6 x& l1 p0 ] else
! _0 X( x2 T$ I( p& g3 U6 V* z7 O2 W <statement sequence3>;6 w& {" f+ |5 O8 y4 ]# n- n
end;
* i9 Y+ G: E7 k5 X如果分支比较多，用：
) m5 L) n3 I# ~% |# N0 ~4 [1 A, J) F inspect <expression>
. g7 k4 n% p# P& d when <constant_list> then) y# |# w" h% |) q- b0 W, N* \
<statement sequence1>;7 r, |+ L7 n Y$ s) u
when <constant_list> then
/ }/ }3 `, S. ]. M; a <statement sequence2>;
. k4 l/ {) {+ p: R8 \ ...
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<statement sequence3>;
4 M4 Z( P' T* M! I" J) oend;% G. E, b4 \9 j0 C
! G) C) @0 I8 I$ `; p2循环语句
) c" g* ~- N" |+ W6 [8 m5 k- b (1) from <statement sequence1>9 h4 d) o$ j% J; _0 L8 u' d' P3 m
until <condition> loop! @5 f B: S% c; j+ F! z
<statement sequence2>;5 d5 w$ v9 X' E! }
end;6 i& w6 [* R2 o! f' V# C
(2) while <condition> loop9 G$ Q( v, [$ C2 Y( ]' |8 M
<statement sequence1>;$ k4 p# q, ?( T) A6 b* c; v
end;3 z( M5 L3 V5 P/ n3 c
(3) repeat 8 z: Q" I9 D( n7 z. `
<statement sequence1>;- Y3 b" K8 p( @
until <condition>;
# o" n* X. }: _ (4) for <condition> to <condition> loop6 \8 _# p$ c" Q) h f: O
<statement sequence1>;
5 u1 L* n) H( J h' o next;' Q2 b( M1 l0 m& E
3中断语句
! V9 P: ?/ n6 e! e+ T waituntil <condition> prio <integer expression>;5 r) |& j( K/ i" g+ O
& ?5 ~; B5 D' K
( I8 i! c ]; K以上为常用的函数！
; K; p! J7 G+ |+ C还有很多，如有需要我把资料发到你邮箱里 , S+ R* f* E. l
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