|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句: r9 ?/ G8 q2 E3 W6 Z' r, n: r0 _
if <condition> then
0 I+ N! D% x! N5 Q1 v7 o <statement sequence1>;
1 @1 {1 L# }3 R/ C n elseif <condition> then' v5 u/ H( d' v
<statement sequence2>;
- h9 D4 A0 @ q else # _& B- Z2 R+ h' d' {' c/ q0 M
<statement sequence3>;
1 O9 M) x% f! z% w$ q end;
4 r" c M+ ]" N ]$ v- A如果分支比较多,用:
: A! X# K) e: `& x inspect <expression>
4 L1 }4 l; @, ^" ?% ?5 l; n when <constant_list> then6 u& N `4 z4 I6 @! U" W; y
<statement sequence1>;
8 q% ~9 }' u; s+ C, o' W when <constant_list> then
7 o: t- F( [; {; o+ u. h- |% O <statement sequence2>;- R+ l( I7 V0 ^0 W3 O/ L* Z
...
, ?$ a$ u+ o( x" y: n# ] else( m% @9 {/ Y5 `. G
<statement sequence3>;
2 j% Q |$ B9 ~2 H1 _7 ~% C( |end;& n f, s; O" j, N$ n
, w2 u5 r, q6 i3 ?8 N2循环语句
3 a* @, D0 ?4 i (1) from <statement sequence1>, b8 F8 z8 L k/ M: R0 J0 g
until <condition> loop0 v0 W: J. L* h" w7 \
<statement sequence2>;
& K( t$ E4 \" V, { ` end;8 P0 e# V) w. W9 u8 G
(2) while <condition> loop
9 `; z7 p# |% q' c& j <statement sequence1>;5 x6 N* u% N% h% v2 T9 l
end;
& C, c" w. d3 P: O3 f (3) repeat
0 e4 L" F. E- f2 {4 k; z! y <statement sequence1>;
0 A |; M" o2 @7 ^6 Z" h until <condition>;, a7 U1 Q( ~; K8 z- [" u
(4) for <condition> to <condition> loop
' S* r* n8 r( @& s8 \ <statement sequence1>;
/ f( d M0 ?, u p next;
; {; q% p! |1 S4 q I3中断语句8 L1 P" i D; e! x: V% ~
waituntil <condition> prio <integer expression>;4 K2 U( j9 ^$ F
) M% l# D( a: X n( {, f, W, u% f( t7 W7 D6 [. T3 i
以上为常用的函数!: k6 W) Y: g9 M$ {( v
还有很多,如有需要我把资料发到你邮箱里 3 o6 q, g# i4 z3 u0 [; O# ?. k X
' h9 D9 V- r. ?, g5 q$ j, N3 l
8 l, d: k2 l$ ?+ ?( q1 W4 n* H( F! b: Q! ~! o9 T7 ^9 z5 B
1 ~ @+ O. e; s2 ^6 B- d( J+ e" l! a- C
2 ]) |+ X5 f( i2 H' |; y% `: H7 w2 a* `
/ O7 W& h% [' |" r% H* W
9 l! _ t2 K( Q& d! P6 q. X
/ ]% `$ J O& _- V4 d: P |
|