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发表于 2012-11-13 08:48:12
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1判断语句( @" W$ Z3 f/ e1 Q, Q( A, q( _" e M
if <condition> then
+ T) R0 K+ @8 j/ k9 D) S; ~( H* ?( j <statement sequence1>;% W% v9 F% D/ y
elseif <condition> then8 C6 E4 W3 q6 w- D
<statement sequence2>; Y8 M5 P" g6 {/ q& F3 o% ^) j5 F6 D
else 4 O. D0 g; T6 ^2 y
<statement sequence3>;
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如果分支比较多，用：
8 x2 W/ d _& R7 n7 ` inspect <expression>& |$ v/ ?' Q" |! }, `3 a# ^, H
when <constant_list> then
% u- M, H n4 k <statement sequence1>;; G( d2 Z6 K( r) G) p/ j7 Z
when <constant_list> then
9 X- Q# }6 W1 z& g+ k. B/ L8 E9 Y <statement sequence2>;- M4 k0 p+ e, {1 g5 j7 g
...8 `; G9 C+ z M
else0 B$ y7 U4 s$ u! ~
<statement sequence3>;
! j8 n8 ^1 r$ pend;
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- C6 Q: n* Q! b0 y- ^- u2循环语句& j* T0 G1 ^# S. u% G7 `& k* b
(1) from <statement sequence1>/ r6 i% O+ f7 U b" m# U8 V3 h, H
until <condition> loop
0 i" S4 |; ^& o! T- M# J <statement sequence2>;+ L3 J- g" j* D4 i; S
end;0 Y7 p% P( C5 h
(2) while <condition> loop; ]' |+ y5 F% ^' L8 G4 G
<statement sequence1>;
9 `1 Z9 ^& Z" ~# f end;
# }/ n( E) N% N (3) repeat ) @# e* D: {7 F, @' z% h
<statement sequence1>;1 ?# W" i A6 F, V) Y- S: t
until <condition>;) ^3 e: y7 x1 _+ E
(4) for <condition> to <condition> loop
7 t' X0 |2 k5 D3 D <statement sequence1>;
, z# D: j5 h; k1 t1 f, E next;
# Z& m8 W9 g5 m" s4 {3中断语句% D2 H3 B, x( Q0 G+ R4 A
waituntil <condition> prio <integer expression>;
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4 z9 ]1 c4 U- w1 Y) d" G以上为常用的函数！
0 m! y, t0 h( i( E8 W还有很多，如有需要我把资料发到你邮箱里 ) j) o U+ k6 ~) Z/ e
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