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发表于 2012-11-13 08:48:12
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1判断语句; E/ f2 k# _- y4 j9 @ z
if <condition> then
) Q3 k% i G* A2 h6 @, ^ <statement sequence1>;
: [7 y, T1 B" o3 m$ T elseif <condition> then
4 E* Z2 T- b% d. b4 J4 ]$ A# N <statement sequence2>;
. i, W) ~- J( v( K, {9 a2 o: T6 R else
. h2 ^2 A1 e3 [* X# F9 N' B <statement sequence3>;& `* z' g) Z6 s3 v
end;# O% M" k! }% G- y% T
如果分支比较多，用：( t6 `" j4 E/ v6 I: l* f: V5 ]0 a
inspect <expression>
$ N* R9 [) B/ `3 @! O' p$ V when <constant_list> then
- `& C! p& P; ?7 }/ o' p# G7 i1 ~ <statement sequence1>;3 {7 g( I/ B4 {$ S7 ?
when <constant_list> then
& @$ F& Z+ w+ v <statement sequence2>;- L, V) }2 G) S* v5 Q
...) }( @; G' O7 C1 Q9 k; o% n
else9 G4 e% E. m% r2 E" w3 U! M5 l1 g
<statement sequence3>;1 R7 ]0 F2 P6 A+ H" T4 Q
end; `" U$ j4 ^1 A) C7 N1 M/ e# M
0 v$ i. C/ U, w; \8 {; Q2循环语句
4 J) d& S1 W0 S# [ d (1) from <statement sequence1> X, X( c2 S0 y4 L6 ?" O" o/ Z
until <condition> loop
. {5 N2 p+ }6 ^/ M) J- H <statement sequence2>;" A! k4 M7 q, ?9 @( D
end;! R V S* w: r" j& n
(2) while <condition> loop* A" r& B/ w( v" P
<statement sequence1>;: O/ Q1 T) F K/ I6 i# k
end;# F( j8 B, O4 U9 P0 V2 M0 ~
(3) repeat * P* j* ~/ C+ n
<statement sequence1>;5 O0 H/ G- T0 q
until <condition>;
' e( W0 y0 S4 d' j6 E; v (4) for <condition> to <condition> loop
: k3 W5 |. q1 \6 C- p7 X+ J( E <statement sequence1>;9 H2 j0 g A8 t3 f7 i) N+ j4 y
next;
& E- W D1 g# _3中断语句
! w- p3 R5 p# W# v) G H! l9 M& n waituntil <condition> prio <integer expression>;
: l; a; v0 @$ l! W; a0 t' {1 Q6 g" u2 @8 m$ H
& [3 V* ?8 _& Q* v
以上为常用的函数！ l5 J. V' _# `* i* Q
还有很多，如有需要我把资料发到你邮箱里 . c+ V# G( H$ a- ~ P7 L0 |) D2 Y
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