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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" X+ p" ?" n! v# n( H+ ^. [$ b; H
if <condition> then
$ I( O/ q8 N3 H( |3 _0 ? <statement sequence1>;
! i, Z1 G2 T) {: z; F" x/ f elseif <condition> then
W) X. U4 F6 S7 Q" o <statement sequence2>;. q1 i" w, @* a; p' w
else + a9 R( [+ Y) T# g3 M
<statement sequence3>;
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如果分支比较多，用：
! j- W O* t) w7 j( ?8 ?- I! _. v inspect <expression>9 u7 |2 s6 n( l* \ p0 }, T
when <constant_list> then
( ~# @- B0 y/ R( U4 L+ ~7 o <statement sequence1>;
8 G7 U3 g$ W& X when <constant_list> then ]. t' g" |' a' m! L9 B; i
<statement sequence2>;3 }/ O+ O: U7 m9 X9 l0 v6 U
...
3 [. K' ^8 x! l+ N& R, x else
' A2 u# A/ T. E0 Q* n) j <statement sequence3>;0 a' X1 D0 F# K/ V9 ?
end;
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2循环语句
! n1 |( r* H y5 a% w: C (1) from <statement sequence1>
* l% l" \' K7 W9 E# p+ H8 { until <condition> loop
$ {. f; Z( t! E0 P& B% t6 T <statement sequence2>;
8 y5 I! h. V& `" A+ m9 ?- ]4 a end;
, Y$ Y/ l. R3 ?/ h6 I N, y! D. } (2) while <condition> loop# a& S! H5 f5 U. C5 W
<statement sequence1>; X% R. x1 f4 Y' `; w) L
end;. v9 T8 F3 S+ y: t2 r/ L* l
(3) repeat ' B7 w/ l% M% I# p1 v- s' p9 @1 j
<statement sequence1>;
; b* Y. {1 {7 H until <condition>;9 V. f9 e+ F/ \# X! I7 S
(4) for <condition> to <condition> loop
( {' k. v+ o8 i/ }9 `) ~ <statement sequence1>;
3 |2 r/ Y- r: q& i2 c: G# V1 q6 f next;
( r; F) L3 R. w0 k/ Z9 r* O; g. _/ w3中断语句
: ?/ R. R% l( d k+ ? waituntil <condition> prio <integer expression>;; s7 ]6 z0 U# u) E- t
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$ `+ r9 j* c G1 Q' Y- e d以上为常用的函数！# f( u9 d8 W; m. x
还有很多，如有需要我把资料发到你邮箱里 + c* B4 a# u8 M' K( q
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