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发表于 2012-11-13 08:48:12
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1判断语句
: A1 z* \$ |5 K if <condition> then! l' e/ v' d0 {! [
<statement sequence1>;# n4 P* D5 a1 [; R7 w$ |& K; Y
elseif <condition> then
# I1 N2 O# _4 v* w D, a <statement sequence2>;
# G ~% @# u! ]' a4 n) C7 ? else 4 C9 F5 V8 j- Z/ y2 R
<statement sequence3>;
, E% U: Y9 T, A3 H8 Z' u1 R end;9 s/ E- y$ ]3 q( h. G
如果分支比较多，用：
2 X, o5 M0 V3 Q1 Y inspect <expression>
6 `+ k9 e. r- B. [' P when <constant_list> then$ F2 ?0 m$ i) p8 j7 m% @
<statement sequence1>;- J5 M# X2 C( U
when <constant_list> then
: ]: q7 h; u3 l2 G9 I1 y% i <statement sequence2>;
) n! x: N, B; q) i: v ...
% L5 c9 u8 ~( [3 p$ f5 X% r else
, _* U7 e: E5 k. N8 G8 t. P# C <statement sequence3>;
7 s: G9 c6 {( K6 x, Oend;/ J2 q5 o. z+ ^, @! E
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2循环语句
9 v3 \3 `; q- x- c1 U (1) from <statement sequence1>
, T5 H. I5 U* j: C4 k6 I until <condition> loop
0 |& l1 N& E4 \2 H u2 { <statement sequence2>;& L& P8 }5 |0 |7 y( A9 g
end;
) J" ]! X d) d5 y1 u0 ?( W2 a' K (2) while <condition> loop- _; {* ?1 T6 V& ?, E1 z) u3 ?
<statement sequence1>;0 ^4 Z7 Q$ X; r
end;- N1 Y" I N- c# h1 [0 l
(3) repeat & R3 J" d! W5 H! _6 V w
<statement sequence1>;
0 `! n s+ _$ P8 K% g until <condition>;
1 z5 ]8 v% d$ }+ X9 ^, E (4) for <condition> to <condition> loop
2 C3 n* O; {4 M* s <statement sequence1>;- v& g1 T, O" X, {" ^6 c( D7 J
next;
5 E% K9 | g. S# x K3中断语句
7 E& t0 M7 a6 h! l! F0 O waituntil <condition> prio <integer expression>;
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' ~9 Z" |3 {9 Q$ ~% ]3 K" s
- t4 a$ W. _2 T: U2 k+ ?1 s以上为常用的函数！
, B) V+ l6 `: j$ W# O Y$ M- ?还有很多，如有需要我把资料发到你邮箱里 + g4 P6 W6 c: j( \" ~, ^
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