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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
1 Z4 j- N5 ?) \" O4 n# ~ if <condition> then
- ? u3 @( Z$ |# Q. z' V& _ <statement sequence1>;- [7 x- V% s v- F; y
elseif <condition> then
6 a* ~! C6 Z$ P. o <statement sequence2>;
4 o) m, h1 Z1 R* z3 ] else ! @' h2 K8 p8 m+ h. S: |# T
<statement sequence3>;" d, d! h8 ~* Z( d0 H$ F
end;
8 L( C4 k" i. ~& }如果分支比较多，用：
7 U& N) b7 u7 j' E5 i% Z1 R inspect <expression>
8 k" r. T- w# u; h; w0 D$ w when <constant_list> then; p. s/ h; S" M, ^# f# M9 r2 V
<statement sequence1>;
+ \+ _ c5 U5 T$ ^% G when <constant_list> then
3 ]& T( p4 B/ z: @& Q <statement sequence2>;
e9 F4 x/ Y3 H* Y7 y' m ...
: ~" C1 ?6 p5 i. X$ C/ y, C9 O: @ else
8 q. u& I2 o' J9 \1 U <statement sequence3>;
0 L. ^; ?$ O" R3 Kend;
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2循环语句
, r0 a8 i4 m! k% R6 G$ s (1) from <statement sequence1># [5 E9 F0 s3 u8 J4 M v
until <condition> loop
/ s( D, J2 @. K' x <statement sequence2>;8 @: m7 z' M3 ]4 `; [$ ]5 J, ~
end;5 {% C$ E5 E; e- ^8 u
(2) while <condition> loop
* s+ R4 L H2 T8 H. S8 D" u5 J( u <statement sequence1>;
4 A! z8 H/ F( B$ }2 o8 t end;) c! ?# d. \. i' N: i
(3) repeat
# y+ Q, Z2 A4 Z0 M, R8 N <statement sequence1>;
- Q( |; o4 a( z( \' J/ Y8 | until <condition>;
# ?: w( ` m+ B8 J+ \ (4) for <condition> to <condition> loop/ c* e, ~" O& {! b/ F+ x
<statement sequence1>;
8 v( v$ w0 a7 r/ v# \+ m0 s next;4 Y* C* p8 i- _
3中断语句
' a( k3 M3 p5 E: G( M% D waituntil <condition> prio <integer expression>;
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以上为常用的函数！, B- _; w! D/ [! |5 W3 B2 a- S
还有很多，如有需要我把资料发到你邮箱里 , G* a0 O0 m0 ^
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