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发表于 2012-11-13 08:48:12
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1判断语句0 a0 @" C' ~, h1 A% R- u! h) @4 Z" e
if <condition> then
1 ?7 D6 [9 K- c: Z <statement sequence1>;/ v4 T5 c: j+ a7 `& y
elseif <condition> then9 F7 E- f. Q4 g$ X6 i1 T
<statement sequence2>;* v% q3 }1 C8 h* @" C2 Y
else & \) c- l. L7 X* @! a$ U& f6 m
<statement sequence3>;& g: T3 g. r) x* I+ G0 R
end;
$ T# B7 N! w; K' O$ P: R3 s/ j如果分支比较多，用：
; E+ ~, F& E3 x inspect <expression>
; l" H" L0 H4 ]& T when <constant_list> then
( E7 ]( r! h+ K: N4 u; P, ^6 A <statement sequence1>;
9 K: \% Z' j$ _7 { when <constant_list> then( a) F( O( {/ L* \. h5 B
<statement sequence2>;2 r! Q3 ~% Y/ ?' a4 e: l8 ?
...& O! n- c, I+ a0 y
else
! ]8 d( n8 O, h' X- Y <statement sequence3>;
- ]# d$ B9 p% W0 Iend;- K% C9 V k2 w: }% }7 O' ^
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2循环语句* h& w j/ I$ L* _+ P$ |! `
(1) from <statement sequence1>
" X* }8 Y9 N0 o7 @ until <condition> loop$ R9 e1 C: K- U- z* J* n# \
<statement sequence2>;
% d$ B/ W. G8 A6 w. ? end;
3 E" m: s/ k3 A0 m- ^; H2 v (2) while <condition> loop
, |$ n& j8 H; x% F0 @ <statement sequence1>;
& b3 \1 |$ ^0 O z3 U end;
+ E1 [' b) J: n( x U' ^ (3) repeat
8 T6 x) L h' p3 O8 n3 n <statement sequence1>;' F7 U' ]8 x& A, y3 G: d4 p4 ^
until <condition>;
+ ?* m" ]: l3 u9 m (4) for <condition> to <condition> loop5 W/ N+ T& [7 s
<statement sequence1>;
" G. S: N- g2 ?7 {1 `' H' y next;
' e9 u1 w% I& `' F8 D' T3中断语句# T5 Y9 V- w3 c
waituntil <condition> prio <integer expression>; l1 L5 V2 y N: O* q
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0 I) D; w$ b5 F c' D7 W% Z1 @以上为常用的函数！) b+ S$ K- e, h8 e. H: b
还有很多，如有需要我把资料发到你邮箱里 & c3 n! G b5 i# U" } g
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