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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
% q9 z; Q5 x( [5 k6 _ if <condition> then! o {5 R& Y' b8 ?- ^9 }
<statement sequence1>;
4 G( |" r m C1 t7 q4 q elseif <condition> then6 c* G s0 V- p4 f, k1 _, C
<statement sequence2>;2 x1 ?2 A/ F# R) `" `: D& Z
else ( |. I d9 K% W8 y0 D d1 X+ a2 m
<statement sequence3>;% J( {- `* F" P! l7 V
end;* [2 O4 i2 e. z2 D0 \
如果分支比较多，用：
( s3 S, R1 C0 N9 b" { inspect <expression>
+ K+ S& i- N: P" Z& i" c$ L when <constant_list> then
. h0 A3 K0 @! W7 f2 k <statement sequence1>;
/ {1 T' H( M( W1 f- S0 _ when <constant_list> then& g. m' c. l/ x9 P0 Q( }" L
<statement sequence2>;3 ~9 r) l" H5 z, c: v/ X a
...
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<statement sequence3>;2 k2 L* n( ?3 l7 P5 e) x, P
end;
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2循环语句
$ M# Q* h1 ~+ r8 `1 x (1) from <statement sequence1>) ~! P6 j" \$ Q, w
until <condition> loop
6 e# @; n6 K2 s4 d: R+ g( M7 q <statement sequence2>;# J3 w! X/ U! X& c+ l# e; `& Q. H0 j
end;3 G% l8 G# l' k
(2) while <condition> loop
7 ]& P2 T. \ t3 D6 P <statement sequence1>;' W: L# y8 W' a5 ?, ?- b; l
end;& L) w3 F& D" Z9 q
(3) repeat ! N" f/ [4 J3 v' B& N9 Q8 d
<statement sequence1>;4 v- }$ T- x* k: ^5 V. f5 X3 |4 z
until <condition>;
9 v. d7 Z8 z$ {% T5 l: | (4) for <condition> to <condition> loop# k' S1 M8 k) q G e4 B+ O+ i2 ~
<statement sequence1>;4 E$ W+ r4 P- f( z5 N
next;6 C# M" q; Z" F# E
3中断语句/ C7 M" G5 U# r7 O
waituntil <condition> prio <integer expression>;- _% i6 {0 D# C6 Y e4 X: {" Q
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3 `; y6 |9 q7 n5 J以上为常用的函数！
/ w" m- m8 ^1 E$ O还有很多，如有需要我把资料发到你邮箱里 . ]7 E9 o4 J3 E# s
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