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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
( Q5 D6 m/ r, x7 g/ H% T( Z if <condition> then
& y8 U! V" W- f- A <statement sequence1>;
2 g" A+ Z5 r* K3 o9 B, Q! v3 R, P1 A+ o elseif <condition> then
% [) l' P V# O4 h8 G! I5 e' V( Q <statement sequence2>;
# V3 Q/ n4 B0 c8 w$ a else 4 V# D# v" u: s2 `' ?( f
<statement sequence3>;
4 P6 h; l. F/ o# z/ `! i* A end;
o) I9 p" a5 D% n, ^如果分支比较多，用：$ j; d0 B) X2 [* v% _7 a$ N
inspect <expression>" C, j4 _% d5 g+ b& f* Q! e# b
when <constant_list> then
, @* _9 k4 A9 Q9 p7 w! w% l <statement sequence1>;
8 y' I$ J* P0 E" s1 a% i/ _ when <constant_list> then
# j" I( }5 _$ I1 m- a& ` <statement sequence2>;
! N: f1 P8 G' e/ v4 P* I% x) W ...
" |8 l9 ^5 j8 }+ b/ O: _4 i else
y5 n& R! j5 V. r6 v <statement sequence3>;
3 Z; u1 ?/ Y1 z6 e' s2 Oend;. ~3 G9 M: N; J Z, h& r% n( R
2 {; y2 R3 O! T" i* y' B2循环语句
) s# a# Q. q$ |4 l (1) from <statement sequence1>1 v2 O7 B$ C; i4 i& |
until <condition> loop: g( c% O& P" `% _
<statement sequence2>;" ^* T$ Y. B- D8 C5 |
end;1 Y" D$ a; s s; ^
(2) while <condition> loop* e, a4 B+ j, B6 V; y
<statement sequence1>;
7 f7 i: }( [; Q* ?4 j$ a& S- U( c end;) ]0 z" | ?, T z4 X7 g# D
(3) repeat
0 n, r4 h& K n1 { <statement sequence1>;; Q% U& J* C. L9 t: o P0 I
until <condition>;
3 W9 ~5 c2 G) P! s0 P; B (4) for <condition> to <condition> loop
# I S/ R; v1 E: \4 L <statement sequence1>;
) q1 m* ~& }9 ]& S# b next;0 q1 z* e* e% n% n( A) h
3中断语句
) X- h# b) z' `. n& m$ f1 R waituntil <condition> prio <integer expression>;$ @7 g' ]' v1 y* g9 B+ D
* I; h3 }+ g) ?3 v# ]
: `7 P7 i. V* Q: L3 w8 H' ^以上为常用的函数！
/ [, L' k2 {5 F1 I0 [9 U还有很多，如有需要我把资料发到你邮箱里 * i! D4 x7 a* R0 S) Y
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