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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
: g" k# |/ O+ u' g+ ~7 Y# m; z if <condition> then
" z$ H1 d, c2 F$ L. |$ C3 H <statement sequence1>;
L7 f# o: |% x8 \ elseif <condition> then
. l& S) d- M, o5 p <statement sequence2>;6 ?2 c6 |0 [' l+ Q6 o5 @6 L* }, Z
else 8 } ], M8 E1 L+ u
<statement sequence3>;
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如果分支比较多，用：. Y% L! l6 F& y! E" ?" Q4 ^7 y
inspect <expression>, _9 y+ A5 e5 V3 w, v
when <constant_list> then6 \/ K1 _, _7 L# A
<statement sequence1>;7 y# D- g+ v8 X* U# W
when <constant_list> then
* g2 |& s& ]0 s% |0 y1 ^2 {6 L- u <statement sequence2>;# _) P0 [/ G7 |* c8 x/ _3 l
...
! I+ q7 E8 J+ T9 Q4 [9 F else6 R0 c. U/ t" c/ [
<statement sequence3>;0 b" u' a3 Q, l6 N
end;
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2循环语句0 ~% r( p3 ~* d# `, [
(1) from <statement sequence1>
. F& c* i3 n2 f- x$ J, A( o/ S* ?) H until <condition> loop) o \+ j# B+ S3 w4 c% w* I8 E! i
<statement sequence2>;
/ i7 z6 K, Y3 \# w" X- N0 E' i$ g end;; p+ I; q0 b) _4 W K/ U
(2) while <condition> loop
' \7 q. Q$ n, g* e+ M2 ^ w <statement sequence1>;
) o) D2 S5 F) _! y8 E: r9 h# U) `1 R end;2 g2 [6 R% ^. m5 L2 |* O
(3) repeat
9 E1 j. y: p+ l7 U" L% o <statement sequence1>;: c, \0 p7 z! C1 T3 y' t* R4 q
until <condition>;4 p" f& e9 A1 Y) H5 _
(4) for <condition> to <condition> loop
0 D* E5 }5 H$ P7 w: g& i+ ^3 Q% n <statement sequence1>;
U8 r1 K, V) P, H5 N2 ] next;
! Y$ C% m& C, M9 F3中断语句
V6 C, {7 Y+ L k* ? o' v waituntil <condition> prio <integer expression>;
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以上为常用的函数！
2 w% w( J: ]1 R! n: f; H还有很多，如有需要我把资料发到你邮箱里 ( z+ ~; p( [3 {6 p( x8 Z! K; ^
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