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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 _/ h$ B, Z4 t! Y' R- ? if <condition> then- n9 @6 |; R5 P# k( _2 a. J
<statement sequence1>;
- W/ {! h- m5 l3 { elseif <condition> then d1 b$ I9 k, {5 B) ?
<statement sequence2>;
- r8 j; Q2 l, ^+ ~# @ else
# \7 w8 \" J! t0 v4 _' P" ] <statement sequence3>;$ m9 W& Y9 c1 D i
end;2 {7 t: r# v, t/ U
如果分支比较多，用：% ~ k7 o$ b1 t" E5 D
inspect <expression>
1 \7 l2 F; J. }+ Y" M+ Y- ]8 P when <constant_list> then0 e, b% X8 L3 U9 t& `! P
<statement sequence1>;$ L/ e4 i8 n; n( p: I# `4 \
when <constant_list> then
# N) w7 o$ e4 q <statement sequence2>;0 l5 B& U8 w. s, H* i
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else
4 D0 a( g9 o y3 G+ ~' Q( b! d <statement sequence3>;, |1 _9 Y, f' Z8 Q5 g! ?
end;
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! B. E6 v9 C) ?5 V: c& B: U2循环语句4 U* ~+ \& g d) h
(1) from <statement sequence1>
; s2 R# f/ F+ b3 O. L until <condition> loop
/ J6 O# T, H- `, V4 u <statement sequence2>;3 a& |0 G' u5 C& e8 s
end;6 ~- P- o" U! E
(2) while <condition> loop5 P Q; X2 }/ o* {* c$ _
<statement sequence1>;# z8 X0 d; s5 |( I" `
end;2 P% D" R( w( R6 a
(3) repeat
- _ m2 n- d3 ?7 L, k <statement sequence1>; P7 U# Y8 P0 O; h- L5 O
until <condition>;
* w# y+ d3 m: p# ]1 ] (4) for <condition> to <condition> loop" E9 @$ K. J% K) P
<statement sequence1>;+ c# d) D5 W8 R$ d. R
next;
) n! ~1 R, N0 A# y7 k, {; I/ E4 a3中断语句
/ W+ ~! c A$ H7 [ waituntil <condition> prio <integer expression>;3 J) D! V# q3 { v8 H
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9 W% i8 @- ]1 Z+ G0 Q$ O以上为常用的函数！2 i! R6 N6 s4 B$ Y9 ?) C. ^/ @% r
还有很多，如有需要我把资料发到你邮箱里 7 J# |" ~/ R8 ]$ @" U
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