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发表于 2012-11-13 08:48:12
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1判断语句' f3 i, K1 W, i7 v/ @' D5 n
if <condition> then7 \) `3 m3 P0 @4 p! _* u8 T
<statement sequence1>;* v. S" O. @8 t$ u( [) m, c
elseif <condition> then
4 A$ I+ j) w, V9 v0 ^, I8 f* Q7 w <statement sequence2>;
: ?/ Z4 ?0 {) G' i% J else 4 |' Y9 Q. M! X9 ~4 V9 a
<statement sequence3>;8 ~$ }! o( C- i+ U
end;
/ v# p- V9 P1 t4 D# ~如果分支比较多，用：
# ]; K0 c. x* x5 Q inspect <expression>
3 w, X( T# d3 ? when <constant_list> then" o1 }! x* ]* x: I/ Z0 }' V! x
<statement sequence1>;* f7 {& B( B3 p. E
when <constant_list> then+ Q. h2 k( j0 Y
<statement sequence2>;
1 \' F1 v: G4 l ...
+ g1 d0 x3 i3 S' c3 V) V else- K: L; ?) R* T/ b
<statement sequence3>;
2 u6 ]" Z$ ~$ Y' A0 ?, j$ iend;3 G, }' `. T7 |& ^
. e3 }3 R% E0 g; {. v+ k* r2循环语句
, c9 d- U2 L9 F/ }7 x l0 b ]" p0 t (1) from <statement sequence1>
% U+ M4 z3 @8 [& S3 M until <condition> loop' ]* y; J7 {' ~/ [) t; R6 Y" K
<statement sequence2>;/ _3 K/ d( z& W
end;
- M& z, |$ i( ?- h% L9 H6 W7 h (2) while <condition> loop
- v4 Y: @& y# a <statement sequence1>;
% K1 o( x* a. e" b$ c; T end;
( m# K! f6 x0 f3 G- p3 W- } (3) repeat
/ k7 P1 ^7 e+ ]# W% O0 R <statement sequence1>;! V1 }3 V3 N9 C$ g1 t2 |
until <condition>;9 a! [7 b0 ~9 Y2 T: e1 ?" ^7 n
(4) for <condition> to <condition> loop
1 _* ?3 B; m$ \ <statement sequence1>;
+ J2 w" a1 a5 J( q4 M7 R4 y8 S& \& L next;5 [7 Y. L9 n! G- t' Q x% k I
3中断语句/ F: g5 o+ s: f4 \4 I) l/ c
waituntil <condition> prio <integer expression>;6 c# S& w1 n) ~. {% w8 k
5 [6 b+ p/ r) C. X4 l. k, V' O6 Y7 O4 p, {" n2 j" q( j {6 G
以上为常用的函数！
7 @( G L2 r. m6 C# \还有很多，如有需要我把资料发到你邮箱里 5 w, z4 N' X! J! E/ h
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