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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4 G! ^0 y0 q1 B3 D% x) c5 M3 l. |" S
if <condition> then' G' ?- T. e6 w
<statement sequence1>;3 K" B1 V* [1 _& L, `- Q
elseif <condition> then
/ y5 F' R( `' a: N+ B s <statement sequence2>;6 ~' h8 u w! b% O a' F& C
else 1 O8 S6 N/ k! B0 f2 t% G* u' O
<statement sequence3>;4 h0 {* n/ E8 d5 e4 ?& }
end;
( e( Z5 Z3 x$ ?( V$ ^如果分支比较多,用:7 \7 {) q9 p, ^3 @/ k
inspect <expression>9 C$ F( p% u+ X, u$ [
when <constant_list> then \+ p- ] w8 t& P# ?3 N; y7 {9 H$ X' \. w
<statement sequence1>;/ k4 X) X/ |$ G$ k5 K' L
when <constant_list> then7 p5 w' X$ s3 x. v t; L6 `
<statement sequence2>;
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else& q% E7 Q+ N5 v0 M$ k. s. u
<statement sequence3>;) x# v% R0 F3 k3 ?2 B3 q
end;& ~4 y7 o' j, R# A/ U* g M5 x
: P, g2 I2 O" c' j7 U2循环语句. m' Q* V5 Q0 T3 G+ Q1 K0 `6 a
(1) from <statement sequence1>
# ?, z) B6 B4 z, O until <condition> loop' A9 `8 a7 C" P7 B0 W& _
<statement sequence2>;
- @! A+ Y* I% X# E end;
6 X" s1 f- S! R9 c' T (2) while <condition> loop' d+ f( w* Q# P" ?2 R; b
<statement sequence1>;
/ S/ {) Q) e9 p' B H end;: p9 v' P! L$ s) P! i9 l
(3) repeat 4 b- a5 F. [- |* ^8 g" X* E
<statement sequence1>;
/ I, ]; F7 j- b until <condition>;
0 d% R1 h9 F1 V3 P6 G) j, Y (4) for <condition> to <condition> loop) W/ m( m5 x. g$ g# c0 t
<statement sequence1>;
/ w9 M9 Z2 `) v& h next;
: p( Q5 V- i. Q3中断语句' h) Y7 p7 i! k# R! x% s, ?
waituntil <condition> prio <integer expression>;9 J! c% ?: d! A6 ]# M0 [
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以上为常用的函数!$ \5 [# `; t1 h3 t t; v
还有很多,如有需要我把资料发到你邮箱里
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