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发表于 2012-11-13 08:48:12
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1判断语句' f& b. u( z3 I! {( V* I
if <condition> then
6 y# A+ C, A7 m6 Q5 w& v <statement sequence1>;
3 f" K6 k: x/ w4 C- w elseif <condition> then6 R" j9 x1 Z2 i7 O* ~
<statement sequence2>;
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<statement sequence3>;
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如果分支比较多，用：
0 q0 p8 \7 `; ?( Q# _" E- {" O inspect <expression>' k: n: j7 G" p) y3 ^8 [& Z3 T( x
when <constant_list> then
/ m- s7 J5 }# `, I) Z6 ? <statement sequence1>;- Q) F& Y q5 ~
when <constant_list> then0 u) g: M, d* Y+ t @
<statement sequence2>;
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<statement sequence3>;
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2循环语句
" f3 H( }; U, o8 G2 z% v (1) from <statement sequence1>, d. w. \0 p0 H% H$ |1 p5 t
until <condition> loop
% Y0 J% j- t# J$ g) c9 q; { <statement sequence2>;
9 Q" J# B# z$ j) q end;: g' X4 W# T( ^" D) C3 O' n7 b
(2) while <condition> loop
- Y" R/ y: D/ y& X) h <statement sequence1>;
; G; o1 w0 S7 v end;; b* J8 T* }0 y0 V1 C W
(3) repeat 3 H9 G) O; T1 C0 H7 M. b
<statement sequence1>;
' D* z0 } _# n! ~ until <condition>;% _/ z3 m6 t5 }) I4 Q' R# ~
(4) for <condition> to <condition> loop
- r+ F0 R+ Z/ |. U2 [6 L+ Z <statement sequence1>;) z6 |9 G% W4 A- U
next;
3 [- m9 P7 b+ I S- m5 j3中断语句0 V2 n& G4 y7 @4 \0 r& g$ t) D
waituntil <condition> prio <integer expression>;2 @ m2 ]# ?' J9 W5 P
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以上为常用的函数！
5 P+ p& n5 D S1 c, M" ~8 M% y还有很多，如有需要我把资料发到你邮箱里 # |! ^# V& j! m2 _( H" Q
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