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发表于 2012-11-13 08:48:12
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1判断语句4 k- u7 u. ]- a7 N, z( v. `
if <condition> then: V' k: v- h7 n7 d0 I& N/ @3 y5 E( V
<statement sequence1>;) z8 ]( \0 S' }" n$ u r& N
elseif <condition> then. I& t! V# j3 ^; }3 Q% i
<statement sequence2>;$ e) _7 h# G2 v& y3 s
else
6 [' S" l! Q/ J <statement sequence3>;, X! ]+ W& Z, V% x Z( d: x ~
end; @$ @* w; O2 Y: }
如果分支比较多，用：( e% y+ w4 _* @+ }7 G
inspect <expression>5 P# b9 U' f1 b) M r
when <constant_list> then
0 X$ c, e$ X' t) Y) M; v <statement sequence1>;9 t+ S0 P- K- E
when <constant_list> then
) e. p, z' `1 h6 `' a <statement sequence2>;
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else
s! A( L2 \- t- s <statement sequence3>;4 o3 r& l7 S% h: c
end;& T2 R" ^* H5 c- v/ Z/ c
, U- \* o: z+ i1 r2循环语句
3 _3 G* a: J( i9 G (1) from <statement sequence1>
5 n' U! C# j& k) u, N8 }4 a8 E( W until <condition> loop
: I/ z% M1 l4 [9 Y7 q' z2 R' d <statement sequence2>;
7 T% _+ |8 r Q$ @ z end;
7 H* J' L% \* M7 n (2) while <condition> loop
+ j# J% M" S' j& `$ @ <statement sequence1>;3 ?4 w L5 }+ c: `9 C
end;: O( l9 y9 V, Z6 [* ]- d8 x v
(3) repeat
K4 k- ?( V; Z2 W( X <statement sequence1>;
* z$ C$ R% K. ` until <condition>;
8 U) j/ x. D7 X+ V, J (4) for <condition> to <condition> loop5 A# j1 Z) Q9 d' I# j- m. w0 J
<statement sequence1>;4 ~+ h0 Z. M) S0 t- ]
next;# B3 t; K1 r. T$ G
3中断语句
# z2 I) P1 g9 d& c8 c, G, M waituntil <condition> prio <integer expression>;7 @, ]3 U4 a+ B2 Z( p( A* w
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以上为常用的函数！) G# g4 N/ F- O
还有很多，如有需要我把资料发到你邮箱里 ( ?5 R: I) d. ~ E3 l' t3 l
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