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发表于 2012-11-13 08:48:12
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1判断语句* C" g! e& y% z0 w) u! e( I
if <condition> then, O( x- d, B' h# t
<statement sequence1>;
$ x* s/ i4 U5 D; X# o elseif <condition> then
2 s2 a0 U- s* ^. ?! _ Y4 Q9 t <statement sequence2>;
1 Z, i) o: Q' V else
5 C! I* }9 \! W0 Z/ o <statement sequence3>;
; k& F8 e( o4 R end;
7 l) @ d" |2 C+ L如果分支比较多,用:; O% K' Y- g* ^! l$ Q3 Q! h; g
inspect <expression>% C+ S Q- m& w. F* b8 g) _
when <constant_list> then
2 I: o' f5 Y! B/ x <statement sequence1>;
+ f4 z6 K5 p! f+ M when <constant_list> then4 S7 I9 W, J8 s3 F( T. P
<statement sequence2>; R a" w6 a3 s! Y2 D
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else
3 k& m! B4 h7 l8 ~ <statement sequence3>;0 F9 Y2 }0 c1 @8 U: n4 @
end;
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+ y; ~/ I- n4 l* P" z/ f2 V2循环语句
U2 s8 a' l4 j" f; M8 V (1) from <statement sequence1>
3 e1 |% [& H0 l: Q Q until <condition> loop
7 X/ e9 k7 D$ U1 b5 h0 C [4 e <statement sequence2>;
7 X- c. X7 d/ L' r end;
0 ]4 R* x1 J! u& f1 n0 b (2) while <condition> loop6 X6 M: Q5 W$ y; s+ h& D( P
<statement sequence1>;
4 X1 C2 p) _2 W* f; K: u/ x end;
% m0 u/ v {$ G+ G+ }* p (3) repeat
- E: `; t" D5 t- a e <statement sequence1>;6 t1 R4 b- L8 b& y( X5 I! d! E* g( t
until <condition>;
# |: D$ m& r) d/ n (4) for <condition> to <condition> loop0 k+ A# O& H2 ~4 L1 Q, I, ]
<statement sequence1>;9 J6 |" X# |( V4 X5 t' V
next;. D3 a$ J& N6 d, b: y- `
3中断语句( Q1 w6 i) f- O. ~) v! J, F
waituntil <condition> prio <integer expression>;) w" D" A4 {/ @( y9 |7 F. n
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以上为常用的函数!
$ g) C% R6 L8 ?* K a/ y/ l9 j8 S还有很多,如有需要我把资料发到你邮箱里
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