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发表于 2012-11-13 08:48:12
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1判断语句+ `% T8 x1 U$ D4 v
if <condition> then
( g. M9 ^! A( j! V% M <statement sequence1>;
: D# T! i% Q' q elseif <condition> then
+ v* w: ^ }8 I) I4 R3 ?6 E! P <statement sequence2>;
. s7 E! F. _- l& R% j: c" Q6 y2 T; L else $ l# T) L, v* ?: v: a
<statement sequence3>;! x8 y; ^/ G8 N& ?/ p, M* L1 F
end;
: l4 z6 T* Q/ @6 g如果分支比较多，用：
. {" q! T, Z2 Z5 k+ k) g# ~( i inspect <expression>& c+ y4 Q2 D- |' v7 G' Z
when <constant_list> then4 u9 W( _/ O& M6 V; r2 N9 C3 d
<statement sequence1>;: v. s$ H/ d$ H/ @& }
when <constant_list> then
. H- _0 z) O7 U% w! ~4 }6 M/ P <statement sequence2>;
! `, I' i6 s" e I( v) m) X3 G ...
& Q6 y! K5 h# P0 s- X, w! B+ P8 @- W% V: @ else* L+ S* d3 w: |6 x
<statement sequence3>;- x4 m. r% Z9 o) V8 @+ x" Z5 D# I
end;: X2 E6 Q2 W% f: d
& z8 Y4 t# ]. {5 v2循环语句2 r8 {. |+ H& f- A+ X: r
(1) from <statement sequence1>
' H2 h$ E: ^' |* |# X until <condition> loop' ]; p( k! P8 L; |3 l3 ?- j1 X1 }+ j
<statement sequence2>;. a6 ~/ O& s6 k( h) b& Z
end;
% \% ?+ a. l6 A, z( Y (2) while <condition> loop
h7 ~( H5 M$ D+ ~) C <statement sequence1>;
: z- K- Q' n3 }7 E3 T' } end;. x/ A1 ~3 j4 }& u: ~
(3) repeat
8 C/ z+ v- d( A% r& ^( y: } <statement sequence1>;
, X3 F1 r; X, [7 I! E3 L v( q until <condition>;
: Q/ w( v! I$ T' [9 n9 O$ \ (4) for <condition> to <condition> loop
4 l8 Z& M- M( Q) z$ Y: @3 p <statement sequence1>;
$ E4 f4 e, G8 v7 d7 F" y next;
* R5 R- D: _7 ]. K% U! n+ M3中断语句3 G+ I- [5 F. H8 s/ l
waituntil <condition> prio <integer expression>;) M% a% _7 I$ I) {
, {0 n) q# f) T
& f. P9 i% R, l, U+ G J以上为常用的函数！
+ F Y: T3 g- P, D* q, K. `还有很多，如有需要我把资料发到你邮箱里 7 _- {' R) L, L# i0 c$ |4 r* ]. F' E) l
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