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发表于 2012-11-13 08:48:12
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1判断语句- o$ R u' ]5 h) ] e7 \3 m4 Y
if <condition> then% C h# V$ H2 e' _
<statement sequence1>;
0 ~& w) p% d. U/ F& o2 I' y elseif <condition> then
- ~2 B7 J' l4 q) I, M k <statement sequence2>;, N4 ^5 v0 X; H T
else
# k# d9 N7 P( k& r2 w) W <statement sequence3>;: s# I6 p) u1 o2 q# W% \
end;9 n' O3 o& h/ U8 c% s6 w: @6 J! @ W
如果分支比较多，用：
; [8 B1 a Q% Q0 G) Z0 o$ m, L inspect <expression>; v; m6 a+ y) r7 |) I) _
when <constant_list> then
" O5 ]5 H4 _- ^# Y& q <statement sequence1>;
; t5 \1 B( V9 |5 i when <constant_list> then
9 K W6 t. X1 m8 \) g <statement sequence2>;
0 Q& }1 C; \5 d8 p- t ...
( ^. F% m& L- }+ s6 F else
6 e* P$ o2 ~: n. E* B) C <statement sequence3>;
2 V+ a4 \8 D" ~0 \end;
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2循环语句* @) t7 X4 Z& K/ I1 P, l6 p
(1) from <statement sequence1>
2 [! H8 }6 V! Q! { until <condition> loop% N( p0 b5 j) C5 _$ N! _
<statement sequence2>;$ {/ T& t1 O' Y, L4 y9 I* _
end;
v6 u- c) B: Z5 n4 e (2) while <condition> loop
6 k5 Z7 A* n+ ?) {! i6 R8 A2 X <statement sequence1>;8 [7 [1 H5 z) E5 w$ b( E1 Z
end;: o% t9 B/ l% e' E3 t( S
(3) repeat
' `/ p- w) ^, y <statement sequence1>;
: f( w3 X2 ?8 Y0 l! x, K! w3 @ until <condition>;
* Z/ l$ U1 P! G: E' P' d6 N9 s' q: M (4) for <condition> to <condition> loop& }4 W1 ^2 C& n0 M3 K
<statement sequence1>;
! t4 f6 b! h+ a: [ next;8 _; ^3 f( n# x! W
3中断语句
' o5 a/ b% T; v% ]1 ?, o; h, K1 D waituntil <condition> prio <integer expression>;% D' [+ @7 Y- H& S! f$ ^9 E0 X
+ E0 i! E" A) m8 ?6 m; c4 i/ ]0 I$ D+ y( n; C2 ~; x
以上为常用的函数！
' ~5 E9 v7 l6 r! @还有很多，如有需要我把资料发到你邮箱里
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