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25.类,对象,成员实例

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发表于 2013-3-9 00:28:28 | 显示全部楼层 |阅读模式

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第一种写法:
" g- H! I: y, T. H% I7 b#include <iostream>
3 N, E; ]# U7 e+ y: S0 P6 `using namespace std;- P7 h9 z9 S( v& L( b
class Human
5 x3 H, }  S! E; |; C. l{
9 n0 v. ?( Q1 M* q# W- O  S5 R5 Ppublic:
1 P) \* T+ B) Y1 }! m9 V0 p void GetHeight(){cout<<Height;}
& V, c0 X: ^* \ void GetWeight(){cout<<Weight;}) \  i8 r6 I& q# {* x' K( o
void SetHeight(int x){Height=x;}* G! S, _2 W5 }0 `( [
void SetWeight(int y){Weight=y;}
8 J1 f6 `4 g5 s# R( }private:# k3 B) n# K8 e; m, A% V
int Height;4 M1 D  ], ?! q* N1 j
int Weight;
, p) Q# e# k% v5 x9 X5 B/ W# ?/ A! O};
8 z* A* ?, J! e
6 s* \2 o7 [& [$ D2 n  ]void main(void)
, t. X; K6 _. F  p: ?( l{0 \6 B* }. f( C' P
   Human Lee;
- r: D! m1 i4 b# E   Lee.SetHeight(172);
! m: a/ F* d* d" Z- b   cout<<"Lee的身高是:";
$ n9 Z' y- J( x$ ~   Lee.GetHeight();
& S4 O# u, ]6 v0 a! ~1 E5 R! y9 g   cout<<endl;
  d. d* e3 U* ~  K# b8 _- A   Lee.SetWeight(120);( T& l! @5 A$ U7 t5 o& r# l
   cout<<"Lee的体重是:";/ D3 L- X2 V, k7 }+ v9 g/ F
   Lee.GetWeight();
7 S- P3 f7 H5 C/ u! e* q   cout<<endl;
/ j+ ]: A3 g& ]}
" V: C1 Z+ @' ]7 p8 L第二种写法:
: K! U; ?$ q4 a+ p#include <iostream>+ h+ }5 _% K/ c: x# r
using namespace std;; k( Q. w# H; M) n) X! U
class Human
, A/ u  L; \' W: Y{
2 L& u) C" c0 Q, D/ J( L3 k$ G" U9 xpublic:) N: U% w2 q7 b, d
void GetHeight();7 Q/ M' A; U) }# X
    void GetWeight();  J" A2 _* ?  p; a2 A# f- z$ n
void SetHeight(int x);
9 w5 c+ {- o2 L7 s void SetWeight(int y);
5 h. g7 k4 Z8 q3 Z* kprivate:2 \; \  J& |& p% A9 ?
int Height;/ {7 k5 e4 E. n0 {' P
int Weight;
- p; }! K& q# p. p6 r};
( J+ G4 o2 p( _, T1 x5 Fvoid Human::SetHeight(int x). N1 R& {) W# h2 E4 R; w" O
{
. B* ^  e$ _5 {% O# u0 G Height=x;3 T5 N, @+ |- a9 c9 R+ W0 C. ^: D
}8 @, M3 o% x% u7 @- `1 _& ?
void Human::GetHeight()
" c1 a# E- P  ]2 |* [+ T2 ]7 C{. |2 K: q& A& B8 r+ V$ z2 f: |+ b
cout<<Height;' R- @* y+ p; Q% H3 }% \, Q
}
9 K6 C$ J" W& D$ U, }' I  s5 Bvoid Human::SetWeight(int y)
$ i3 A9 p) ]* p3 D1 K  s{* O/ a9 M' i7 T4 a
Weight=y;1 n: ?+ Q; h, x# r4 m
}
; `& f2 z1 u  g7 H3 z/ `7 cvoid Human::GetWeight()* A7 c- K. z  X$ D5 K; H7 Z3 Z: y
{
' e# K4 t/ W; l6 z cout<<Weight;
) y% Q" d% R( L+ _) O/ F9 S5 n2 L}) \+ c# B& G+ i) i& G, @
void main(void)
1 {% Z( F) G1 R  v3 P/ ^{( i/ s6 `5 g$ p7 j" T. f
   Human Lee;0 L* d, e9 |/ Y( l- c" d
   Lee.SetHeight(172);/ o# ?5 C* K* q) g2 W
   cout<<"Lee的身高是:";
, _1 U) H4 L) ^8 S' r$ m- ^+ O, q7 Z+ @   Lee.GetHeight();
- G  W& G9 M" {8 }# T   cout<<endl;; O# a1 n+ |* G/ ~! n4 T/ \
   Lee.SetWeight(120);9 |4 m- ]& b$ B/ M; q0 k+ |+ A
   cout<<"Lee的体重是:";! K& G2 O5 r8 h$ y
   Lee.GetWeight();
: t9 f2 A- U* L% }- d5 F" p   cout<<endl;% E# _4 k8 y2 M% e, G
}
4 M6 K4 x' `  ?$ A. r: _  X推荐第二种写法
6 Q3 K* k2 w* Q' S2 ]& Z
+ M3 ~2 H9 {: a0 H0 ]: q2 G9 v' g* \
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