|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句
( p$ F: E' u4 @9 f l# X if <condition> then
1 \* A5 i5 K3 ?( i7 S: d <statement sequence1>;
' _, H- a" Q/ g6 F elseif <condition> then9 ]* Z! l) e! q
<statement sequence2>;
" f) Y3 s0 q% S7 P; J else
; P2 ~" k' D- v* p+ } h4 m. Z <statement sequence3>;4 R8 N" T' N6 H
end;# w" D; Q' s+ E( d0 O1 V& R5 Y
如果分支比较多，用：
# e( c# r9 e! H- R1 E! _1 s inspect <expression>
: s7 J, Y7 r7 b when <constant_list> then
2 q1 k3 h O; |/ f Y# o <statement sequence1>;
$ x1 J" W4 C1 j% ~" Z when <constant_list> then& K/ S0 ]. ~: |
<statement sequence2>;
0 |/ Y0 z' a$ F$ w ...$ D/ g. V l* N+ ]
else% \$ D5 p6 L, q& U: z3 x5 ]
<statement sequence3>;5 W+ `+ n X* |
end;: Y L8 N8 I1 F2 }0 }
- S/ L6 N2 W, s: F$ p/ _2循环语句" Y8 \% ]9 e. P- L
(1) from <statement sequence1>
h' {' S! |4 Q9 D$ ?* a until <condition> loop
7 a: ~7 `3 f: J; W) Y5 g" G <statement sequence2>;2 f1 |: k, Y: i3 Q+ |+ |
end;
" H2 O2 g' B& N3 ^" | (2) while <condition> loop
$ ~5 v! I' w% N/ z <statement sequence1>;
' X; Z; | B" L/ E end;
% k+ p N! Q9 D! K- t5 l( ?# y (3) repeat 1 E& A5 ^0 ?/ O. r
<statement sequence1>;
! |$ g0 r$ l* d$ k until <condition>;% M4 s4 b2 i9 j$ p) d- q m
(4) for <condition> to <condition> loop
3 ?& H% d" P# b3 ^. j5 d <statement sequence1>;: j& l k6 |2 V4 B7 l1 J
next;
9 `2 [+ {/ `9 H6 b( `3中断语句& ~# _1 l: N0 Y0 {. W
waituntil <condition> prio <integer expression>;
* r$ ^) |+ J. U0 t" ^1 K6 ~3 B- M% ]
4 h7 I# Q- g$ a5 y6 v& k: J以上为常用的函数！
5 j! V* E6 A1 `1 E3 |/ e. t还有很多，如有需要我把资料发到你邮箱里 # [; O7 K$ O q, _
9 a# H2 g% v- [. i+ k' d) V
/ d$ o% ~1 O* C. Z! _. C, }0 e# V8 R/ C, L+ O9 K, e
6 d8 A! F Z( R4 d0 q- R$ S s" \, W0 |# M' K' X
- p( n1 _; Z9 j* g+ L3 o! K. O$ X3 w# g5 `" u
2 V4 K8 t% s5 D* O0 v4 j. [% R
1 r: O/ \- ~3 F' q- P# o$ j" f 9 N; e0 r. K/ s( F! M* y
|
|
[复制链接]
