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发表于 2012-11-13 08:48:12
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1判断语句+ D( J# i1 l- A+ _* S9 P" x7 N0 {
if <condition> then
: O# w7 |- m% a1 D4 s; g' J N( o <statement sequence1>;$ T2 P1 U& P6 M: }3 P$ |
elseif <condition> then
! I! q1 P8 S% O( e <statement sequence2>;
) E' L. z. L7 H9 c6 t- T C else
% p- R! _, n$ }* c! i <statement sequence3>;; j9 N# a! h1 N* }. q
end;
; o3 r. ^4 q/ b0 w( Z2 b8 _如果分支比较多，用： F1 _7 ~, ^8 l# L- N
inspect <expression>/ o: I, G$ Q7 c( h6 h4 w4 d4 `( d
when <constant_list> then
1 N* M) u+ m L" C <statement sequence1>;
( j2 t0 F, w5 D7 j when <constant_list> then' X/ @7 }5 A* u7 t! Q
<statement sequence2>;3 M5 {' h$ Z& }0 g% D0 b
...
! d' j! U; ^3 ~: G else
' N' z- I, y" U$ M) P9 J/ F% D* b <statement sequence3>;, A! ]; R- q8 A5 @
end;( D. ?7 K- x" G5 q' _$ J
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2循环语句
' v8 B7 c3 ]( n4 u9 z; l9 g (1) from <statement sequence1>3 w! Q: X" V; r1 y9 ]
until <condition> loop, ?* q" Z" U$ t0 g& |
<statement sequence2>;9 ^! ~5 f7 F3 m' h1 O8 k- n
end;
# V K' o! i( w (2) while <condition> loop# F4 H! o3 t. w* {4 W& p
<statement sequence1>;
$ z5 y x/ R$ r/ A end;
; I6 v8 l8 g7 z7 N: x/ t V& g (3) repeat
) ~% ]5 W" N2 c% X0 z <statement sequence1>;
& X5 ]0 {+ k$ P" ~ until <condition>;
0 Z# U" a' |) Y! |$ [ (4) for <condition> to <condition> loop4 r) _% L( \* \# I
<statement sequence1>;
- v! ~6 c/ |2 R next;
8 g5 O2 r% h! v4 v6 I6 S+ R3中断语句
" t' A2 Q; ^5 v; J waituntil <condition> prio <integer expression>;& T" d" F5 b& m0 C
% R; w% c! E% ?/ J0 q8 `% R
% y0 z$ b* h8 A0 m: u以上为常用的函数！5 B6 [8 I- Q# e j
还有很多，如有需要我把资料发到你邮箱里 5 y- @# X' ~/ V% G+ \& B
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