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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
4 f" y5 R. Y7 b* O# \' @% P if <condition> then
2 |" n5 R" O$ n/ z# j0 k: h) \ <statement sequence1>;' K7 k+ v: e+ V: N& o: l$ T
elseif <condition> then% F+ J, [% ~( S
<statement sequence2>;* V7 H; j9 R; X: @1 j
else 3 }/ c) T9 `4 C6 C
<statement sequence3>;
7 P. Q0 ]+ l& T$ w3 k end;5 F& q: Y8 w5 X
如果分支比较多，用：
% H( }6 d2 ^: P+ \7 B inspect <expression>
4 e2 t# Q' ~! o when <constant_list> then
% y! n4 W, E2 G# l$ @$ h9 P' v <statement sequence1>;
6 o/ _/ H: g" {% o d! l, ^ when <constant_list> then3 U, M7 d* M9 O+ W: l: V
<statement sequence2>;$ K4 ]8 b# h& s; j0 T; P" I
...
4 a6 e" S' C6 F. q else1 m" m1 w* _3 b( }2 u+ t
<statement sequence3>;
5 I0 U2 V% O, A! E! q6 ^7 y5 @) }! Tend;
; a$ E; u! `& {4 h( {6 R& h& K, U) A9 f! J+ }
2循环语句
4 }' I! E" _/ u+ I: c" n (1) from <statement sequence1>+ o/ h8 l; F1 i( M
until <condition> loop( z$ G ]) p* E: L& [5 t$ U" }3 g
<statement sequence2>;7 a5 q% ], ^) |: G. G+ |9 J
end;
: `6 F4 b8 U/ ]1 }& l9 Q% r$ J3 S (2) while <condition> loop H( b* X0 O$ Z! D U
<statement sequence1>;
, d& a- t7 U- P1 E/ N end;
3 }7 y' G8 [7 ^6 U9 f* W d9 e (3) repeat - x! W, Y: s! Y' |: m
<statement sequence1>;8 x% Z: A" L; X! i+ h0 N- g7 r
until <condition>;
) v) H6 p0 R0 R, H (4) for <condition> to <condition> loop
" ]; V$ p) T) h% n4 S- ? <statement sequence1>;
' x/ Y6 Q9 k( X2 C3 Y next;
; n4 x/ |! v+ _ p3中断语句$ Y1 J/ u: O) R
waituntil <condition> prio <integer expression>;3 ]. w) y1 U7 E
# H2 h6 s- X9 Q
7 [* y/ {5 _+ N0 B以上为常用的函数！
8 S1 t) o/ S( j/ i还有很多，如有需要我把资料发到你邮箱里 F. C% V* D5 M, @$ j4 Q3 V
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