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发表于 2012-11-13 08:48:12
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1判断语句: x2 ?0 Y6 t% Z& V8 n* B- F! t
if <condition> then
- S; s/ L4 m( D7 |* g, N <statement sequence1>;
' B% r) O2 u3 H: ~7 R elseif <condition> then+ O e( P- ~! p# v9 E
<statement sequence2>;4 t# g8 u) W' f
else 7 d$ ^7 c5 h. X l/ b% G
<statement sequence3>;& r# M+ A: K1 d+ a |
end;/ v( m( j6 \# v, M7 f% b/ h
如果分支比较多，用：. c6 b8 t1 R2 m
inspect <expression>
& k; E: p+ e2 _) J f when <constant_list> then
$ Z- P/ S% _& Y: W( G <statement sequence1>;
0 f9 i4 y8 P5 T" x/ Z& w& J when <constant_list> then
8 ~6 w0 |# {% ?: z2 d D0 v <statement sequence2>;
+ w4 i! I w: G& u9 Y/ [ ...1 R3 h0 c2 m% K
else8 q6 D. Z" j& U( H B
<statement sequence3>;
6 |; }0 v% E1 A4 `end;0 w8 H; o5 p! j! N
8 P5 g0 s7 j" J5 w% y$ {2循环语句
# w& G1 w& D, T( a0 \ (1) from <statement sequence1>( {4 p: ~6 k$ Y9 ?! R8 }/ A/ J
until <condition> loop
3 W$ z b! k8 m6 q <statement sequence2>;( B4 R4 A9 J/ Z6 e0 `% c6 J% S
end;
( c) k7 z5 T3 R3 r- h& Q (2) while <condition> loop
; ^9 F) V0 Q/ X- M <statement sequence1>;
& W+ q! l- k8 W Q* { end;
. u- D8 {3 X' u* W* v (3) repeat 5 a5 O; i; u* u& P7 ^) P8 D, F
<statement sequence1>;' j# c. s' s% {+ v$ a9 F( q
until <condition>;
F' L: f" P! ^ (4) for <condition> to <condition> loop% ?7 m( Q9 _% |. j1 h9 L6 P
<statement sequence1>;+ n7 p, {, K$ X: A/ n2 T
next;& C/ I& J! h3 R: T9 {
3中断语句
- O# g& i7 d2 L waituntil <condition> prio <integer expression>;: }1 S% [9 \) _+ F% K3 D; Q* t
4 N) j9 a# C4 i( F. U
( r0 i6 O9 J/ E6 ~( y0 y以上为常用的函数！0 s* G! I) f- Z. a; N9 L
还有很多，如有需要我把资料发到你邮箱里 5 `5 _ t7 y" t* Y- V" P
1 }* p( Z C6 {$ R- X }1 ]
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y8 z+ j" z H' N, v% d2 I2 R
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