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发表于 2012-11-13 08:48:12
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1判断语句
1 E% y2 p+ e' ?( b if <condition> then" D: w( Y/ o7 b/ D$ }5 @
<statement sequence1>;9 c0 [$ _% [* C8 I
elseif <condition> then
/ [& x& l3 M( V5 J+ N7 y6 Q <statement sequence2>;
* x3 Y1 A& b; T0 T else # o1 M- f# ]$ K* h* ~/ m' E+ v- c: ~
<statement sequence3>;' B; K# }. ^" n6 }) v+ G
end;' X# c/ K4 p T, W
如果分支比较多，用：
( |, W9 { N r% l inspect <expression>
% \( ^( X. }/ Z' b5 n5 [ Y$ x C4 t when <constant_list> then5 w3 t" O% S5 w) c
<statement sequence1>;( R& S: P+ z; e \; v$ G
when <constant_list> then% x5 i# h' [1 }0 a5 L" l
<statement sequence2>;
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else
U) w% @3 R1 [ <statement sequence3>;% \6 |2 Z$ [; c4 t5 E
end;5 a! N; s% x/ r" S! @; f j
; ?" j8 O0 {; m2 C H9 a# l2循环语句
9 }! k' i e2 k a (1) from <statement sequence1>
- O) c% c: x {# P7 O) ?6 c until <condition> loop
+ q/ j* Z; T, |* j% [- [! d; a% a <statement sequence2>;
- d7 I1 v& o) Y; R$ r* j1 }! j end;
2 M7 E, L2 z: N7 A; N2 J3 W (2) while <condition> loop
% O( w& v" q9 a# t, {& {) { <statement sequence1>;
. p6 O* ~* J( E( I4 O" a end;
" ]4 i( a2 U o7 ]2 v2 W% U) l+ T (3) repeat
" V9 f, y+ P) v4 y5 [' q+ L4 R7 c <statement sequence1>;7 [' z- m7 t7 p) z4 R' D" m
until <condition>;& x4 S9 h- L' z/ K S) d! f0 X4 v! S
(4) for <condition> to <condition> loop
6 H. I( N6 w1 c3 ~( e& z <statement sequence1>;
4 f# `4 @# w$ Z' f8 s6 j6 m" [- J( l next;
# [9 }. i+ r5 X0 p/ x3中断语句
, E# l0 N+ b3 ^; G( C+ S3 O waituntil <condition> prio <integer expression>;' j& |, H2 _: ]. R3 @: |
! U i X, }- g( p
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以上为常用的函数！
0 N8 G& V; c* p7 A还有很多，如有需要我把资料发到你邮箱里 8 W+ v9 V& R {( `6 v9 p8 o# {, r
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+ C3 x7 f: e: Y' \; T1 Q
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