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发表于 2012-11-13 08:48:12
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1判断语句0 k& O! X% }( W9 ?& J9 `
if <condition> then' _ Y [2 E& n- {& l7 @
<statement sequence1>;) j3 g" k+ y& m5 Y
elseif <condition> then
8 u! y& i, J) h <statement sequence2>;
' ~ S" {, G8 C& e+ k6 M else
9 o8 [9 b8 A, _4 e <statement sequence3>;0 n( }! F3 Z' U% c+ v a5 K1 z
end; e' ^& L0 b) ]$ [
如果分支比较多，用：
$ _0 d9 H1 ^$ J inspect <expression>
5 {2 [1 ]& \7 d when <constant_list> then
$ u7 p5 F# |$ Z, a3 C- f# l. C <statement sequence1>;- k. o: U4 T: E$ a" w" @
when <constant_list> then
, I" u/ U$ A! ]# `# }9 s <statement sequence2>;" @' T# _7 ~3 z) l/ J Q
...
3 L" l8 t! u0 L3 {- ~9 m else
4 H7 u( {/ t8 n+ a* J- w: o6 `& p <statement sequence3>;
% @5 i1 \! H( V$ |. [. \end;/ z1 m# y! f4 W7 I: o0 {3 k2 {
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2循环语句
2 B1 Y- i f' m, v8 | (1) from <statement sequence1>
" p, H/ E) t+ e, M until <condition> loop
" y3 K* Y: V: G9 e6 C/ c z <statement sequence2>;9 X! V) }4 Q# u4 k! |3 {1 P
end;
1 l# u, k& S1 T. v5 d (2) while <condition> loop
1 u9 s& y; n$ y# E( \9 w3 g, C3 a <statement sequence1>;
$ |. b0 S" z! g, K' |: I. F end;; h8 C+ {- H! d
(3) repeat 8 S0 m9 g5 c* ^4 @
<statement sequence1>;
; G& H. U+ B8 M# [ _6 _- h: Q; @ until <condition>;: Q; f2 _, ^) u3 K# P" v; K- e; G
(4) for <condition> to <condition> loop
- Y; S9 x" x& }% k; J <statement sequence1>;
/ s/ s5 h/ L! J! N' M- d1 O next;* {, l$ K7 W1 O/ U* A
3中断语句 V* g9 Y4 f @9 _. N
waituntil <condition> prio <integer expression>;
; s" ] m) m+ G0 o& b
0 W W9 m% I* \
( j! I: X7 @, o! S以上为常用的函数！
$ ^$ w5 ?; f2 ^& `) ]还有很多，如有需要我把资料发到你邮箱里 9 `/ O; l1 w+ [5 |. L% h) t: E
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