|
|
发表于 2012-11-13 08:48:12
|
显示全部楼层
1判断语句
4 K; W9 v& a8 s8 h: I if <condition> then- x; s, i2 N! ^- u$ C4 W3 _. g
<statement sequence1>;8 T4 z/ u5 \, Z$ u" O& k
elseif <condition> then
+ |- l: ~% L. H: s# Y2 D <statement sequence2>;( ^5 d, ^* y1 w
else
6 S. K) H# z1 C# S! Z) ^& L; g <statement sequence3>;
4 i, U9 X* N0 \7 h+ b) c' O) \: | end; b0 D$ S* k/ _7 x9 m0 W7 A2 Q6 b
如果分支比较多，用：
; D" S0 M( B7 u1 C$ M( _" C/ x inspect <expression>
* n6 N% n0 `- R* X( c when <constant_list> then' I% \# Z( M& p% _8 t
<statement sequence1>;
7 \* P# Y! e! M) _" l9 A( `/ G when <constant_list> then9 E1 b. z z/ ?9 P3 h: x, ?
<statement sequence2>;; J0 G0 Q1 Y' o
...7 \$ y) V f& G& F
else- f, Y) _9 X: t$ j2 u
<statement sequence3>;
' C/ s" ^6 S& a/ u: ^0 vend;+ G5 _! h' e4 T# N7 m' r* t7 j
4 ?9 h6 y9 Z' F
2循环语句. h# m+ ~5 w; x' T
(1) from <statement sequence1>$ c! k8 l( s% {/ N" w
until <condition> loop
% J0 c" t$ U" B6 { <statement sequence2>;
3 e, h( H [: B3 i1 H end;
% v: S! c& K; V (2) while <condition> loop, ]0 J! v% ~) i- n2 ~9 Y
<statement sequence1>;
# B4 f* F; ^1 r6 E. [ end;, ~" `/ U. G5 J
(3) repeat
7 H) q" X2 v* f3 v( _) w <statement sequence1>;! u3 k5 d& {& W' d' ~1 d2 |
until <condition>;
) C; n: V" u! W# h" ?* u9 d4 A (4) for <condition> to <condition> loop
l4 E7 t2 m- M! Z5 [ <statement sequence1>;
/ ?' Q9 c$ ?7 j4 P4 h% j next;
- j1 k, l: k8 }: d( L* s3中断语句
9 r. X4 [; O# U- v waituntil <condition> prio <integer expression>;) J0 m2 T$ u. p
6 j( E! z, ]' O9 Q1 o
2 n4 j9 X2 z: ^1 ]( `以上为常用的函数！/ |# x. A$ G+ v% E
还有很多，如有需要我把资料发到你邮箱里
9 K1 y! i* e: c0 R* ~ ^3 \( w7 Q) Y6 [: B- k5 R
+ H: a# V5 @4 k# {
' C2 E: o6 I9 d6 W5 ? * o( J* @9 |/ A
2 ?$ A0 D; g7 V2 C
- C) {8 ^" |# D d3 `7 b" c" |) `) J- c
; E7 N9 G) r0 l0 v" r8 J2 o9 p( R4 |$ O( ?. l
9 _* n2 `/ O: |7 Y' p7 { |
|
[复制链接]
