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发表于 2012-11-13 08:48:12
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1判断语句 ~* `9 V$ n: `) }
if <condition> then
# Z5 D* S0 c8 L/ s- D) g5 x& F <statement sequence1>;
& M e& i& y& M* m- S2 y elseif <condition> then
n9 g7 A/ y8 q <statement sequence2>;1 V8 m% d7 ]" V$ Z" n- A6 F
else
( C+ e8 D2 Z3 H7 T$ u; a9 S3 g9 X <statement sequence3>;) E, P2 F$ _* X; T7 V* q
end;* y7 a7 `( I+ d3 K. e6 B" d
如果分支比较多，用：( s. J9 k2 u; U
inspect <expression>
* V+ C: X+ }4 e' a9 A9 T% a3 O; J/ @ when <constant_list> then g( h* E- D9 d$ |# V
<statement sequence1>;1 J/ X" d9 ?5 h+ p
when <constant_list> then$ y: S m) `' t4 P8 f# Q' j
<statement sequence2>;
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else) w5 ^0 @% [0 Z5 e
<statement sequence3>;
9 {3 a" U" r5 ]1 r; {7 X' eend;
) Y$ U& }6 s2 T& p C( d5 [1 k$ N0 _+ H( k6 m1 X
2循环语句
* s. X$ X% ?* Y, l (1) from <statement sequence1>
0 x" w. K, R: q0 G- q+ q until <condition> loop) ^' y* }5 D7 A
<statement sequence2>;
$ C u* K( f7 Z3 ]7 B end;
" {# k' w/ U& ?1 j (2) while <condition> loop: k! @ X7 d: z
<statement sequence1>;
$ ]) x% e; |. r, E+ V2 ` end;
5 N. T$ m$ A7 X; c$ n u4 I (3) repeat
1 E" i& i1 {& r" W0 `% Z <statement sequence1>;
6 ]. \6 o: h/ P6 N+ z4 \ until <condition>;3 C7 U9 i# o# t- c9 k3 H! a
(4) for <condition> to <condition> loop
; z' V$ Z0 v5 `3 ^- X/ E% C <statement sequence1>;1 p5 k6 P6 }) i% {3 A
next;
% ~( D( O+ k: g, r3中断语句
7 n; B3 W& g$ }2 H waituntil <condition> prio <integer expression>;
- i0 o/ A6 |7 R! r6 w- m( ^! t2 B- r6 [' y1 ^& Q/ E* l6 @
. P( M$ X1 n8 ?4 [4 L以上为常用的函数！
! k6 v5 n( |; r! ^$ |2 Z还有很多，如有需要我把资料发到你邮箱里
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