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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6 O: p7 N" l0 V0 i6 J+ }! W
if <condition> then8 |9 `. H+ b% w3 G5 F% P
<statement sequence1>;
( G1 ?1 ?9 `( H6 Z' m9 V; }8 F8 K2 Z elseif <condition> then
! I& X# E, Q9 O N4 q) h0 G6 X <statement sequence2>;
( ]( n- J1 h5 {2 _ else " a- m, H: {; a- `( a
<statement sequence3>;
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如果分支比较多,用:
5 z3 J, P3 H) D0 j* A# P# W inspect <expression>0 E3 ~' S0 p0 J8 `% E
when <constant_list> then* |* o! M0 U+ G. o. a4 w
<statement sequence1>;, Y5 |' K% P: b) r! `
when <constant_list> then. d) f5 }' B4 J1 f5 T, `6 G- r
<statement sequence2>;
/ {; `/ A9 o) A- S ...
# X I. [6 j* {# y" B0 h5 \ else
! }4 V9 h2 } U1 _ <statement sequence3>;, {$ _6 O3 C6 O
end;
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2循环语句8 `1 n. g& f0 l: P o/ {
(1) from <statement sequence1>* C* \, }$ G! i! n2 f8 g, f
until <condition> loop; |% u) L: O2 K4 y
<statement sequence2>;
5 q" r2 l$ A% l- F/ r end;" A' v3 I* l0 u5 L! @3 V4 o
(2) while <condition> loop
' J0 F" F+ O# z; d0 g# e% [8 r7 p <statement sequence1>;
1 Q, S4 o" P- A; ^3 A$ q+ l/ G4 t/ b end; p% o5 j' E+ `1 Q5 K# d
(3) repeat
- _. e/ c/ C8 ^6 h* a. c <statement sequence1>;
% k, x5 I% ?* T4 A' J1 o until <condition>;7 I/ T$ a Q7 z3 H1 k+ l; y
(4) for <condition> to <condition> loop& g" c' q2 j: i4 v% ?1 F J; u
<statement sequence1>;+ a" t' r B6 t
next;, w! u, r% _3 l1 o/ W
3中断语句
, F+ F$ z" u; y waituntil <condition> prio <integer expression>;& v4 Q) j6 i. }3 i' r
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+ \/ D/ S5 J$ O! h) G2 q- t4 ?# k以上为常用的函数!
3 O; W4 z" e7 c- M7 D还有很多,如有需要我把资料发到你邮箱里 % Q: w7 F! |" D
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