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发表于 2012-11-13 08:48:12
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1判断语句
; [3 ]5 ~6 }& |+ b9 r" k if <condition> then
+ z0 y* h* M- k <statement sequence1>;; a! d+ }" `2 U- a" ~7 z4 {1 B* G
elseif <condition> then" d% ^1 h, L& M. m" f+ ~0 { @3 M
<statement sequence2>;
+ S* x# _) |2 u8 H0 p else
+ ]/ `$ t6 q# Q <statement sequence3>;
: G. r- \ j* i m6 { end;
! F" N8 _: Z$ D' j, u( k% p8 v, q如果分支比较多，用：
: h, q$ @ F+ p& E3 n2 {5 n3 I7 Q3 _ inspect <expression>) K8 A/ _" \1 T& x7 O% |& n o
when <constant_list> then
1 {* ^ o+ @* C <statement sequence1>;
0 w9 |" z3 T4 f& w2 { when <constant_list> then- B. c7 z+ g ^* j* b) {& l3 U6 e& r
<statement sequence2>;
* K( s, \. w. c2 F: @ ...
+ a& c4 s. s1 m6 d else
- t3 V; q; ^$ k <statement sequence3>;8 B7 B6 }4 a; x2 y+ |
end;9 a: H/ _$ a B) l" B
+ q; c( S+ a6 {" Y- A1 a2循环语句
. u. C" F4 c- }2 f (1) from <statement sequence1>8 q$ u* q; E+ w9 k
until <condition> loop: F/ j" ?1 I$ j0 \& Q" B8 l
<statement sequence2>;. q- Z5 g5 m/ g: D- l, b1 E
end;
/ [! K. H, c7 q' Z9 V8 }3 ?8 L (2) while <condition> loop
8 K1 {% _; L2 k1 s% D <statement sequence1>;& w* T: q: b' p4 O" u
end;
" T9 C* B; S5 B (3) repeat 2 x2 F) e# I# J. f$ I ]( v8 ]
<statement sequence1>;
' N9 F- n# O. `4 ?. I# T: S; { until <condition>;7 O7 T6 R6 d# n# }) R. j
(4) for <condition> to <condition> loop, @% q; f4 U( h9 |3 |7 R
<statement sequence1>;
0 w4 y+ R; z- B+ K next;
4 H3 U. `; D( Q6 s3中断语句
& g" E* \# C4 A, k u waituntil <condition> prio <integer expression>;/ w% d0 P$ G3 ~0 w$ s2 S
7 n$ R7 Q+ @6 Z: K/ a, A
! d: h! I! o5 e J7 v& ]1 u+ ~以上为常用的函数！
3 N( o9 ?' ?! u8 Q9 _$ ]* p还有很多，如有需要我把资料发到你邮箱里 ) y) _( N* o. N: ?" l
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+ Y3 B: }% @, H4 ]" l3 j
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