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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 C& G" q0 O' D* e J if <condition> then
3 a. {( s8 v8 N9 [ <statement sequence1>;) o9 O' v; B) r, s$ q3 w4 A/ ~
elseif <condition> then
: ]( U- \: R" f8 p/ v, H/ ]! L& X <statement sequence2>;1 j/ {* I! y2 R
else
7 X# m# c4 i2 y <statement sequence3>;* o# j; U/ [( d
end;
5 w8 d/ d, |3 {% K) Z% ?如果分支比较多，用：
" m: @: _6 `- e S inspect <expression>1 x5 G- Q2 [. t# D; i" I
when <constant_list> then0 K. c) ~2 C3 {1 [5 p% c
<statement sequence1>; l, N6 j) T( ` E
when <constant_list> then3 n8 N4 t0 ^, p! ?; i: W5 `
<statement sequence2>; x& a9 X3 i# S9 A
...
$ ~' N2 O. T! C" q else
( S# D' i- E+ q; c( h <statement sequence3>;
; R6 {" u6 Q' L/ z- o" Yend;2 A9 |: r0 I9 m. c
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2循环语句
" ^) X1 L4 P2 A- X/ ? (1) from <statement sequence1>
* {1 Y% r4 A) _9 F! e until <condition> loop
6 m0 z5 h1 Z* ^ <statement sequence2>;
* b$ ^2 N+ B4 Y0 B% P! l- v end;+ j3 e( y7 l2 ]+ o* _% [7 `
(2) while <condition> loop% y, z0 I9 A! g+ x2 g
<statement sequence1>;
* R5 s( h% }/ a0 l# f end;! O# _+ y" m& f
(3) repeat
* A& S8 _2 c: k( s$ R <statement sequence1>;7 A b9 A1 o A! T
until <condition>;( V9 s3 ~ g6 m+ _, T0 {
(4) for <condition> to <condition> loop
' P, c# H2 L% B% q3 |' E: e' j. k6 v <statement sequence1>;& C. C+ `# U0 M" R
next;
- O/ S( |8 d) t" A Q3中断语句
7 X5 f" g# L4 D' w waituntil <condition> prio <integer expression>;. p' T2 Z& L& c+ j* t- u
, A7 p0 m) v- `: o" Z. ^
& n# X1 V0 _: @% Q( Z, M" T1 h以上为常用的函数！
) v; I; m: I, v3 y6 \# H# P还有很多，如有需要我把资料发到你邮箱里
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