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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! @# Z7 J1 j; ^$ C6 f* C; X
if <condition> then" ]3 i$ p( F5 m, n! ]
<statement sequence1>;
+ R6 G `: ?) H$ F$ a elseif <condition> then }; r- \# k d: ^9 u2 _
<statement sequence2>; e$ t& o* ?8 I4 ~$ M3 o/ w
else $ h0 N2 Z0 e- F7 j
<statement sequence3>;
2 T* c2 m' Z' V$ n3 w, K6 N end;
8 }9 Z" b7 n/ @ ^如果分支比较多，用：
' J1 M- h! [6 H' j: T inspect <expression>
+ l! y7 V: a. R: \ when <constant_list> then
, y0 v& j8 u$ Z/ b4 | <statement sequence1>;% n8 l* q& h- t& o7 J; B5 K" t7 z
when <constant_list> then! b1 B9 U* [4 z0 p7 ~8 `
<statement sequence2>;
$ t) Y' P0 q2 H: K! d- ` ...
H/ e$ Q, G# V4 t+ K else- f0 F" q* s6 O" K
<statement sequence3>;4 a9 _; e, O [" Q
end;+ H. o; V8 S! ]9 p) I/ F9 K, L+ a
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2循环语句: r+ k+ S! g z H# f' W4 D! E
(1) from <statement sequence1>
! |( H6 L$ l: ] until <condition> loop" D0 v5 s2 y5 ~- u1 s
<statement sequence2>;% X8 Y3 Z- r d/ p; A+ Y2 B
end;
- q. i! a* ~7 q6 l; Y0 l (2) while <condition> loop3 ~% x7 U3 t" z" e
<statement sequence1>;: P; O% k3 ^ X5 L/ h' D. O J
end;' _. D4 c; S4 X
(3) repeat 2 W8 Q, M% a/ l( K! O# ~
<statement sequence1>;
0 `) c5 |1 l3 `" h- r' B5 y until <condition>;2 F* O3 N' m& }, U+ {
(4) for <condition> to <condition> loop! x; r) E+ C6 u2 e4 o: Y
<statement sequence1>;! f. \* S, N3 I4 _& t
next;
0 o9 H% J7 Q' ^, l3 y& K3中断语句% A8 o! B( A, v" G! r: `
waituntil <condition> prio <integer expression>;% `0 h5 J# o2 T7 k; _# o1 N
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1 O4 D4 r8 |9 ?( O以上为常用的函数！
2 v; y8 ], ~6 Z* Z& Z. I! k% y Y) t还有很多，如有需要我把资料发到你邮箱里
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