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发表于 2012-11-13 08:48:12
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1判断语句5 y/ R0 V+ X/ O6 D P) x
if <condition> then' D% [% s8 Y' G
<statement sequence1>;
8 b5 R$ V, v1 F6 Z elseif <condition> then8 d4 W4 N; w0 r/ y8 Z
<statement sequence2>;
! m ~0 u0 d8 {! ^ else
( M. X' F. u. s/ n# j6 L4 b8 ] <statement sequence3>;
7 @$ j/ p2 A, h7 t' x, v C9 T end;8 D+ E6 J# v8 X) U# X( C
如果分支比较多，用：# ?8 w4 c* R( J! z3 _, \
inspect <expression>' x' l( L( \6 T' M6 S
when <constant_list> then
' s' K2 p/ Q, @' M* @6 S <statement sequence1>;
6 \7 u) j/ _0 O8 F& I3 f( q when <constant_list> then ^" J* w, V6 e7 \( v
<statement sequence2>;
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else; Z4 p, d5 H! b! y5 h' s% N
<statement sequence3>;
+ n. o: h- w" k* U9 o# Tend;
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0 s7 j# @% X7 H$ l2循环语句9 ?: a* V, c( y7 J( Q. j) p
(1) from <statement sequence1>/ k# p7 ]* x m5 x' m
until <condition> loop! q5 U& N. z. t9 y- o# E/ R
<statement sequence2>;
& ]& x/ P) v& I end;
8 B5 Z9 O* r: T e (2) while <condition> loop
. B" }) R% [/ N <statement sequence1>;$ y, ~; W. q* b" a! @2 p/ _
end;
4 g g% _6 r8 T (3) repeat 0 m" x' |; q, b% O1 V
<statement sequence1>;
" _% K+ v" R6 c! a7 u+ B1 p until <condition>; w. ]6 p0 N! W" \9 O3 {
(4) for <condition> to <condition> loop
) I L( a, Q' Q+ Y6 ]- f0 }. E <statement sequence1>;
* H5 f# n! k/ d. Y: K& { next;
/ D. W- R5 ?: }! J' g3中断语句: C1 b" d2 P9 S y) u: {# E/ c5 b2 c* U
waituntil <condition> prio <integer expression>;
/ k- E2 [" j. |: \; B2 Q! y( o8 Q: [2 b8 B6 q i0 ~
* n" O7 b& T* X) ~% \( L以上为常用的函数！
: g( K, Z- Q- m9 u7 I1 y9 `, b, O0 i2 l还有很多，如有需要我把资料发到你邮箱里 ' ~0 G: f. {5 z; q" A+ n) j
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