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发表于 2012-11-13 08:48:12
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1判断语句" V( a( y4 m$ }, Y0 Q8 |1 k9 X
if <condition> then$ Y2 a/ [7 O5 X. o7 k# \
<statement sequence1>;# e6 E0 {, M# g2 b
elseif <condition> then5 K, A o! G8 W; b6 x5 d
<statement sequence2>;2 }0 `; ^- c1 b/ x, ~) o5 v/ ]
else
, i) f# X6 }: R) O <statement sequence3>;
2 }1 P) T0 n; A6 f8 A end;
# v4 V4 V, g. B O# T& ~4 C+ Z如果分支比较多，用：
& O7 P5 ~# c% m* Q inspect <expression>
: k7 T+ m1 h2 c" U! r when <constant_list> then7 D2 _; H) m% ]. e" F7 }/ [
<statement sequence1>;
+ @! |9 n! H8 D when <constant_list> then8 ?: k; w# s0 Z( e' U( `# f: d% n
<statement sequence2>;: ?2 s/ b5 `; `% v
...: k. w {+ M- `) X( V- _
else
2 ~$ s3 Q7 [# p q3 Y! q <statement sequence3>;
8 w+ _& X; U2 q6 i; h* b u5 |; Tend; q0 }- ~; J8 d- w J1 U: { H/ A
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2循环语句
0 ~% B( P- A9 D& _) o' c (1) from <statement sequence1>7 D1 f' z. F! o: v6 w
until <condition> loop
3 Y8 o9 C6 j! I; J <statement sequence2>;; K# W* H9 |% Y
end;* \. ]1 K1 B) N }' o
(2) while <condition> loop. X9 c' c: i9 ^% k) U* E) N
<statement sequence1>;( Y' \4 T& n4 M' N& w9 X' x; {1 r
end;
8 n( Q( ^; L' p% D: O( l O H4 x (3) repeat & R' M( T& S" k
<statement sequence1>;8 @- Z m9 h( F: o* x. p1 u( L# C
until <condition>;
/ g& A0 n, E! ]2 q7 Q7 w% B (4) for <condition> to <condition> loop4 {- u" f* d& [0 F- g) g! y
<statement sequence1>;
7 e; x4 B7 b6 f" s next;5 q7 U; b! [# M4 v- t
3中断语句) c2 H7 }$ [0 f% k; v; S
waituntil <condition> prio <integer expression>;
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以上为常用的函数！8 Q7 R. ?2 s/ d2 P, X' z p! o& J
还有很多，如有需要我把资料发到你邮箱里 3 h: O# Y4 u) n$ F1 c# E
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