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发表于 2012-11-13 08:48:12
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1判断语句2 J" ], m) m) l+ L8 }3 V2 z% V; \! x
if <condition> then" P, W- y" Y1 T) a4 R) R {
<statement sequence1>;
" {8 w' S$ @2 {, N4 v3 L0 K elseif <condition> then
. P1 F. z9 b7 U <statement sequence2>;! t# y& ^% J9 F
else
0 |1 w+ U7 g3 Z( [. x <statement sequence3>;
6 I& G% J( Y5 `# f end;/ ]' }# ~7 @! x
如果分支比较多，用：
, V. _3 S+ X) C; w! G8 r) ?- Y inspect <expression>
& a& X% v" ^, Q% M4 J$ |6 p' ? when <constant_list> then& E9 C1 v; y7 Q' U. T
<statement sequence1>;* k: d" C9 @. O4 X3 [* [
when <constant_list> then' E3 A. j# K B O0 O. Y+ N1 m3 ]6 l+ F
<statement sequence2>;9 U+ ^9 ?) S) w- f7 d
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else; P, w2 J' ]! w# T
<statement sequence3>;. T0 q7 W3 z$ a9 }+ W1 L
end;
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2循环语句
2 x T# Z6 s& [8 a; F (1) from <statement sequence1>+ M( L4 @8 I/ E* b6 Q+ H3 `
until <condition> loop
: L! p1 x' `4 ^% l( O <statement sequence2>;
) X& c0 }0 _% z& J9 B6 R end;( L7 D& ?' ?" U# T9 ]6 m/ ?( B6 f. n
(2) while <condition> loop
, V: }: A5 [0 } H& Y% P) _ <statement sequence1>;
6 c3 @" ^# X9 g! p% ` end;" X3 B6 g- Q0 l( g
(3) repeat 9 g* V1 Y3 u& R0 f5 ^* k. s
<statement sequence1>;5 ~/ U+ X) N' Z' y9 n8 O1 V, b
until <condition>;! N/ R I' F( U b
(4) for <condition> to <condition> loop
$ H* j* m$ j8 Y6 u+ Y* W <statement sequence1>;/ t8 ~) C( _ S- N
next;! ?' T- Q5 q6 p* h$ w. R" f
3中断语句
w2 n c; L- W( a$ q waituntil <condition> prio <integer expression>;
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/ U4 y3 J" E t; V# z$ x2 @以上为常用的函数！
9 J1 ?4 k& T6 `" i% t还有很多，如有需要我把资料发到你邮箱里 4 v$ c$ ?) s$ S B2 C
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