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发表于 2012-11-13 08:48:12
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1判断语句
9 D9 J- C6 V! U- j1 O, Y; N if <condition> then% E0 w8 y% ]' O6 d" T
<statement sequence1>;
5 }/ h0 p4 {& Y2 Z- Z/ n8 [ elseif <condition> then, B5 w% b! L6 a9 b
<statement sequence2>;, q. B. O& Z; P8 z0 x
else
: c9 ?5 W2 U. c; T! l2 W <statement sequence3>;
1 H2 [3 r" a0 \' e) | end;3 w; f/ @3 U0 A- Q# y. L
如果分支比较多，用：
0 m# U4 L, z9 j3 I0 w" z1 d inspect <expression>/ a. A$ s, y+ V2 M/ s# J$ e& |2 o
when <constant_list> then( u3 a, h& d+ G' q; Y* e) A
<statement sequence1>;
4 \" C% K+ f3 I7 \ when <constant_list> then
7 r" V6 W5 W: v) N <statement sequence2>;
7 Y8 T: f! y/ T& T8 P ...! N$ V/ j- Y# i4 W$ }
else9 R& ^/ V. i( u' n
<statement sequence3>;8 v2 e0 H% C6 x( G
end;
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2循环语句2 q3 p- F% U/ i4 z: ~" L
(1) from <statement sequence1>
6 w8 ?4 ? i! u3 y2 A. S5 W8 S9 p until <condition> loop
4 G! T8 O5 s4 \/ I5 D <statement sequence2>;
9 A7 ?/ ?6 h7 e: [ end;, ~) X' o! X# v) R7 S% M: Y+ s
(2) while <condition> loop# B( f) L+ O- V3 o
<statement sequence1>;) x+ B( n. r& k8 u) L( ~) w; A
end;$ \# x* G( w# C$ T5 H4 s- g6 z
(3) repeat : C3 ?! E# t( I: F% N& e& M3 `
<statement sequence1>;
2 o, N0 F$ b8 Z. [8 ?$ F until <condition>;
% f. \) u; F0 ]# p/ l3 D (4) for <condition> to <condition> loop
1 |7 Z% p9 e7 r/ ^3 Q8 z <statement sequence1>;
, D( A8 t; Y' {9 A5 D2 ?( f- C next;9 _, U$ I& p- o8 s/ [$ P
3中断语句4 Q J B. q2 ]8 p
waituntil <condition> prio <integer expression>; c& v3 @( V0 s2 T# a6 C
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# b( x# ]& `5 @, f, c7 D/ u& ~以上为常用的函数！
* y' T+ R% g- [1 k. H还有很多，如有需要我把资料发到你邮箱里 ) a' w0 {. c D, Q2 w$ j' H0 d: ]
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