|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句
1 g# {6 e+ H: D! q if <condition> then! ?! q& a$ L$ @( v1 j: b+ R9 p# v
<statement sequence1>;
( {; K( x0 h- U9 U8 K5 n elseif <condition> then
, O5 t- Y9 }1 v5 t <statement sequence2>;& l! q" E% k9 i6 H) w
else * W2 W5 f% y% \) {7 |3 \
<statement sequence3>;
8 Y9 O$ K8 P/ ]4 O. G# [ end;8 }; ?: d6 J! w
如果分支比较多,用:
^8 ^8 G8 n1 w* w5 L4 R inspect <expression>$ ?) r" ~ }5 J$ W; `
when <constant_list> then
( b# f, O' w' U <statement sequence1>;: w9 S* V4 s% ~( z* n
when <constant_list> then
6 j+ v {! E% L# T6 }* o# K <statement sequence2>;/ O( e+ Y8 q% u- c# D1 u# f
...4 T5 f* f& K, T+ ^6 ]
else2 v0 g5 b6 `/ J, J# c b0 [
<statement sequence3>;
0 m! j4 n% G( h/ L' n9 @% D* h- Mend; _' X& a* j4 E# R$ G
8 {/ H* I7 Y) V" ^& F8 N+ S4 N
2循环语句& a. Z8 z8 N& B7 l
(1) from <statement sequence1>' k0 U( r) }7 S" V7 G
until <condition> loop( x4 s7 N9 ?( N7 k6 z% x) \
<statement sequence2>;1 b+ J3 q+ u3 l2 J
end;2 N) f0 s; i9 g* z! @$ X: r4 n
(2) while <condition> loop
' G, x* v0 R7 ? <statement sequence1>;
- J* T, n9 k: d3 y' W& O# O end;" [) J/ m7 i! d: p4 h& ^/ R
(3) repeat
. Y2 I; P" D, n( M; Z8 A3 y/ i9 N <statement sequence1>;" |' c: T, H- }7 H5 L6 @ m* L
until <condition>;7 T% k9 v) r) F: j
(4) for <condition> to <condition> loop* W8 h9 U" F- X. t" M7 S
<statement sequence1>;( y6 E; I% |0 C& ^$ L: F, E7 R# E. T
next;
9 t& P5 x/ N3 ^+ l$ V: ~/ c0 k3中断语句1 u$ ^ R! q1 Q9 w: H
waituntil <condition> prio <integer expression>;( q9 J& a3 q+ Q. s8 T
2 a0 p; E& [3 F; T
4 Z8 q5 M! r6 F) T$ l1 L以上为常用的函数!
$ ?( E" u/ p) n E还有很多,如有需要我把资料发到你邮箱里 0 t; d" G4 |4 J; s; K
$ Q5 k% X( J: S2 v1 Y9 \
( {7 |3 U% \* F8 ]: @, R: d
/ o* i- h; f( h5 o& n$ T( n/ Z' w 5 }: e6 v. I" B: l# X
4 h: _7 H4 }5 `3 r
f! @/ x6 F5 e& b" o" i
4 V j0 h4 o! V) ~! L# c! m
: S! e) J% }# P1 ~$ _# Q% {' l3 ?; J
( @3 {# V6 D( A |
|