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发表于 2012-11-13 08:48:12
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1判断语句; i1 s# D+ n5 v9 [( g% B
if <condition> then! p1 s/ j; F6 \. q/ @1 y1 h
<statement sequence1>;$ O' Q9 J4 t/ S" C5 A) G# a3 h
elseif <condition> then* e+ a* A' ^3 L3 o1 Q4 q0 `! s
<statement sequence2>;0 i9 c* Q6 }% Z1 q7 l
else 1 I& A; ~' k6 x- \% d
<statement sequence3>; X4 p$ \: W/ j: D6 a. N* Y
end;
3 g' Q0 R8 O0 N5 v* R如果分支比较多，用：
0 i0 b3 k( S1 b0 |4 b3 o inspect <expression>6 U+ \; |. y, \6 D" y0 ^9 v" M
when <constant_list> then; \' i: B1 M; @4 _7 Y k
<statement sequence1>;( C+ T6 O7 ?3 |. z
when <constant_list> then
2 Q. }9 X$ j" b/ m) ]4 | <statement sequence2>;9 f) J4 G- z0 o6 _& S3 g* K
...: v {/ _8 l0 z! r4 v: x' N6 z
else
2 S- h4 ]2 C: i <statement sequence3>;9 [* e0 R+ c" _4 Y9 j, z. k1 n0 R
end;
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2循环语句
( v- w7 l! J; ]4 G* D (1) from <statement sequence1>
( F2 B* A* F; Y" W- O6 H T until <condition> loop
5 \$ M- Q0 e/ |' p- p( g) W- U <statement sequence2>;
( N2 d5 v f/ [" l$ T% K end;
% f+ C# l4 @: T1 i. Q (2) while <condition> loop
6 x; _; B, ?6 D' D# D# [& [ <statement sequence1>;- A3 T5 }1 ^% [
end;5 `, Q; K. g& |0 s
(3) repeat
' y) v( a9 v; t8 Y } {4 f0 q& [ <statement sequence1>;' f* L; {# D/ l# W, m7 o
until <condition>;
) X9 H e2 B# H) C (4) for <condition> to <condition> loop( u. E7 n- R: ? v
<statement sequence1>;
7 ^4 ^0 a7 c- X8 e. a9 `! P next;
" F. `" b. m( H% V3 A! w; Q' ^7 b: |3中断语句
1 h* b: @7 Z6 _, z# [ waituntil <condition> prio <integer expression>;4 s/ F g8 ]+ p1 X
8 E W* G: h9 @' G6 S! E
: L" H! _6 V o, X M以上为常用的函数！
6 `& O! K- k; |$ N3 c还有很多，如有需要我把资料发到你邮箱里
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