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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
3 ?+ _. i B" p& o0 S9 }+ N7 c if <condition> then
* B! S3 ^% e2 F6 x2 |% U. L <statement sequence1>;
" o+ o- w' Z/ ~3 q8 T elseif <condition> then
# k& }" f3 _4 R% M <statement sequence2>;
; M8 ^3 F; A3 Q0 h5 M+ W% C else + X8 [$ X% |# F9 {1 H. \5 [
<statement sequence3>;" s! y: k! p+ F5 V8 i+ a2 ^" `$ _
end;7 @9 F' M$ L4 y- \' ^
如果分支比较多，用：$ {( f& v0 T! _1 f6 O
inspect <expression>
, M8 r) R7 A! W/ A when <constant_list> then
1 j* B6 h% x' J& @$ q <statement sequence1>;
7 x4 y) [2 w( z8 h# d* i when <constant_list> then
) e3 c+ i: s, V( _& L <statement sequence2>;
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else
2 q8 H! P, t9 N: p% r <statement sequence3>;
- n5 h2 V+ c, z3 E9 |8 f" pend;
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2循环语句* L. m7 d* K8 k
(1) from <statement sequence1>
2 w( d) S: F | until <condition> loop
6 @9 H6 r( j, W <statement sequence2>;& B/ v+ w8 q* I' O" ]
end;
6 k* q5 b2 e. d2 J (2) while <condition> loop
7 m* }. G# z) v( o4 B" {0 b <statement sequence1>;( U# H$ @0 @/ S7 Y1 g
end;
5 H) ~- R$ M; b0 @" J! B: D. i (3) repeat
7 G" N) q( j! {8 M: T- }% |: P4 W( w <statement sequence1>;
# o2 @1 }, P3 W until <condition>;8 _# p0 A1 h8 O# n5 p# D
(4) for <condition> to <condition> loop
5 u8 P7 h6 K" V/ H+ C <statement sequence1>;2 U$ u/ z, r( O' i& j: R, e- }
next;+ E1 H3 \' x2 y" p a+ E/ A" P
3中断语句
0 d4 k4 j! S! _1 h) Y9 [/ R2 u waituntil <condition> prio <integer expression>;
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以上为常用的函数！3 c- f) V h3 H* u1 F& M& U
还有很多，如有需要我把资料发到你邮箱里
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