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发表于 2012-11-13 08:48:12
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显示全部楼层
1判断语句) P8 s4 u0 O) Y m! q& A
if <condition> then
' {6 a4 A4 E3 i1 P" o0 r <statement sequence1>;. O2 Q7 n9 {6 x5 e b5 Q" {- m
elseif <condition> then' X) {5 Q) O9 p2 ?8 S
<statement sequence2>;2 @0 G( F0 A8 B- C$ T/ @
else
- P: m a* f3 v7 M y/ z9 B$ V0 k <statement sequence3>;% n: t6 j! s: R# Q6 B
end;1 E9 J) t. W0 P
如果分支比较多,用:) _# o8 }6 j6 k! b
inspect <expression>7 [$ S' V5 D+ \0 N
when <constant_list> then
$ S, \# f+ r! O4 F# e, n6 T4 A <statement sequence1>;
5 F5 C+ ^9 P/ P$ f; \ when <constant_list> then
) O9 V( }' I. }8 C z' b! v- k3 N <statement sequence2>;& }5 `7 [. q9 F6 H' R
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else, Y, Y7 f& m, Z. J
<statement sequence3>;
& `+ ^/ ~5 ^2 ~, l: Uend;4 }2 o! X, w9 F
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2循环语句
/ v0 Y4 I: j5 L$ G, \- @# C (1) from <statement sequence1>0 N1 N# i0 A8 `+ D
until <condition> loop
% ~! m3 F3 I% R+ n/ r1 q- ?1 T' g <statement sequence2>;
9 X D, M) H1 ]8 u end;, k2 \# u1 J) L! Z8 V
(2) while <condition> loop
1 U& n0 R3 E8 d: V% S* J7 ?% w <statement sequence1>;7 W, U% a1 v" z. U% y+ |; T
end;
0 `) W3 X) D/ o- I. j (3) repeat 1 c0 q( _( Y, R0 m7 [' a( z
<statement sequence1>;
2 r( U# i1 m- \1 X* E, s6 x until <condition>;* \9 \( C. z% \$ h
(4) for <condition> to <condition> loop. |& A# z) d' X: N6 J8 C- O
<statement sequence1>;
: Y) k% T& M" B0 D& X4 |3 M1 _ next;" @0 Z4 g; \: f
3中断语句
' \, d5 n- z4 M2 G6 I; } waituntil <condition> prio <integer expression>;
) V8 o" E3 w* J6 b9 I& @! e0 u$ r
, u" j( c3 f% `$ _1 G! L3 W5 z以上为常用的函数!
q2 d" c `; p( C# H还有很多,如有需要我把资料发到你邮箱里 * J9 j Y( K9 C! F, I3 A8 y# E4 W
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