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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
" M+ {8 p2 d. ^9 o if <condition> then" U% j: ^5 d. ^! `
<statement sequence1>;
2 c( Y) d: I* a9 G" H- T elseif <condition> then
. `5 L5 x2 z8 X7 U4 D C2 l <statement sequence2>;
& t- ~4 ?6 b2 ^& w else ! ?; _' |( r! w# T# N' D
<statement sequence3>;" j3 ]6 v0 l! B' u _5 U( \" G
end;9 R w' a9 r- S
如果分支比较多，用：
( v7 f# ~4 P* F9 k3 L, f) Y' x inspect <expression>
8 k% W- m, ~! P7 [- y& i% i when <constant_list> then
* r* f z4 V' U. H/ L( y <statement sequence1>;
3 G* B! Y5 H7 G) K when <constant_list> then
( y( q0 W3 X) X0 Z& e0 H <statement sequence2>;
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else
* i+ q3 p3 g) {9 L) Q <statement sequence3>;
$ _' q5 x3 w& {7 \3 Q2 q' Eend;
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' J7 q4 y* J, |9 g6 c1 Y2循环语句
& |+ s/ ^: ]$ Q (1) from <statement sequence1>) u" k7 p) e- a# k
until <condition> loop# C9 o0 |# u' e* V8 R
<statement sequence2>;9 v- A5 r' k- N7 ?) q( I! a* e
end;
7 C- F( q& O7 m1 w (2) while <condition> loop
# s* S) t' o" z <statement sequence1>;6 K4 `: A4 p% d2 C# r
end;
( s. H6 }/ ^# j( W+ H5 W6 x (3) repeat
& f {; Q8 Y% S, } <statement sequence1>;( ?( ]( W. N) ]& ^7 X* S- @
until <condition>;
0 Y. x% X# x# v( w (4) for <condition> to <condition> loop' m, r& j2 d. n
<statement sequence1>;% X: F4 `# i' s2 q. Y v
next;
3 M- U& `# K1 y; h* p2 a# q$ U- _3中断语句
4 {" S, Z, l* M4 P, m0 n* I waituntil <condition> prio <integer expression>;
' r8 }. r- V: T m0 W* {: P/ e+ [# `: ^3 {3 _
$ u* ?! N' X: L
以上为常用的函数！% c) F0 S* j$ P' |
还有很多，如有需要我把资料发到你邮箱里
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