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发表于 2012-11-13 08:48:12
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1判断语句
7 ]: l# [ X3 b+ x: ?. s if <condition> then
. U" k. c/ E: {6 p1 p3 x <statement sequence1>; G7 c7 B, z' F4 t+ `: J1 V# n0 D
elseif <condition> then
$ a; X2 M2 A, S0 D7 {5 a! n <statement sequence2>;, O# y+ I5 R" G# p9 _0 z( E
else + `! N( _! A0 I- p* ~" h" i
<statement sequence3>;
3 q- Y+ O N- y# M* S end;# R+ ~9 L$ z1 s* D9 l( w
如果分支比较多，用：
8 ?/ S3 S, C& v inspect <expression>7 W& I" R, L4 f* @
when <constant_list> then
: V! U4 i H; S, t6 I, A <statement sequence1>;% i. m) O& W- y3 ~* q
when <constant_list> then
/ y) S) t* i, M$ e; F7 F; C <statement sequence2>;
. }0 |* \7 S2 G0 F6 F, w* e ...4 K+ o' f0 G" n% ?; v( h2 c
else7 t0 M; \5 Z* D( t; A2 V+ R# i
<statement sequence3>;
( R# S! [& c S- ?end;! k5 G I) C: w2 }$ T& C
/ w% ]' h8 Q1 b/ {2循环语句
0 G9 G% E3 B* k- g7 \+ `; d9 g3 M (1) from <statement sequence1>
2 T* F: P2 _- ?$ P- A8 i2 w until <condition> loop0 O3 R; B1 o* w8 |5 m# |3 z
<statement sequence2>;' S5 K4 @, }% h3 S6 Q
end;
: m8 Y3 O( K; x/ N8 i8 h3 X (2) while <condition> loop
0 ^# G: E0 y$ Q- _- | |0 q <statement sequence1>;3 Y! l+ V2 w" [$ h
end;
6 i0 e9 d+ r/ u/ C+ ? (3) repeat 2 g) }- H& _; J( X
<statement sequence1>;) f" K( |9 c' T( U* k
until <condition>;" L6 x3 L3 c6 x y) q
(4) for <condition> to <condition> loop
" U6 ?" X- V4 Q* l2 A# b <statement sequence1>;
5 r; d' w+ x A) F% d5 a& d h next;
. M& }" C; V) d) d% Q, ]3中断语句, p6 n4 x7 U( j
waituntil <condition> prio <integer expression>; z, q- ], b, s" y& T
8 S7 D! q; d8 T1 Z8 G
- a3 G4 t2 H% R2 f: q以上为常用的函数！
% L8 U' _) E" f, I7 A6 ?1 ]; n' Y还有很多，如有需要我把资料发到你邮箱里 2 W! T9 V Y! H1 X! @0 K8 ?# s
( {2 M( O& C! E; w
% ^0 K5 Y# g6 A' K9 M+ v: O0 d X* D, P* m
# ]3 v' j+ e" _9 i2 S+ k4 Z+ B7 `, ^' _+ |
$ |9 p1 ] |. X0 ~* k: q7 {& a
9 |8 n) Z# f y' ?& h i2 j6 T. L1 E6 Z
9 u0 V# T% B* J& d! } 7 R3 _3 C! u# f/ m* G `4 i
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