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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, T$ u9 O- X* I% G! q7 S1 F( `
if <condition> then$ O* j5 X5 E3 d! ^0 ?' F8 V$ V
<statement sequence1>;
- q4 [3 R5 Z; L- _5 @: ~ elseif <condition> then2 e8 W% t8 n0 i# F0 e
<statement sequence2>;
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<statement sequence3>;. f3 V, z3 S; C( ^; C+ Y* R
end;" Q+ w& x! Z* S4 m Y1 u* j
如果分支比较多，用：% O- i5 E, S- ^' H' ~
inspect <expression>* m( J. K9 C( c" Z$ t4 E
when <constant_list> then
# w$ w; o M8 o <statement sequence1>;6 F3 |/ ^/ |- p+ O$ d3 j! H
when <constant_list> then1 G: _* H5 W/ A3 c! {
<statement sequence2>;: C! D) S) t9 `1 ]; Y" L) u+ C
...! x2 q$ \% e/ o. }+ U" u
else
& |6 H0 Q" \) E2 `9 Z <statement sequence3>;& ~3 y. h9 n# R$ c$ G9 L/ c! X( q
end;4 U9 ` ~/ o* b& P, B
8 e/ @" w4 n3 I8 j: F2循环语句
/ Z7 r+ T9 O) [' ]/ n# y (1) from <statement sequence1>. ^4 X+ `* ]8 g3 r5 [
until <condition> loop; q/ @, N* N; j5 |% y r3 _
<statement sequence2>;, ~( r* `* l5 A# f
end;" c$ A4 Z; b* |0 Q' U4 P5 ` h
(2) while <condition> loop9 _$ X, ~! v# K5 V4 }% e9 q
<statement sequence1>;
5 ^* Z4 _0 {- F9 m+ U. L# ?- i/ D end;5 J) m" r/ o& Q$ }, Z9 G: ?* d
(3) repeat
" J& \1 O0 }; m* {' o. p6 { <statement sequence1>;( L4 l/ |, n' T; B6 i$ Y
until <condition>;
; O0 P6 {2 W& f4 p/ m7 R (4) for <condition> to <condition> loop
3 U7 W* [ G4 U' C' D& y9 c4 m <statement sequence1>;
' U. {- z; R2 m& j" j3 C next;
* s" `* [$ m; |7 G3中断语句
) u& f) i w" t: e' ^$ r! a$ O0 n- n waituntil <condition> prio <integer expression>;0 f& T# ~! `" T
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! r- r; m. F+ D8 S0 x以上为常用的函数！
( A( p+ {" P0 o# C! G$ c. P: Y还有很多，如有需要我把资料发到你邮箱里 : K: N) {: p' A3 q/ ^
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