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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:
. w. ^2 h/ O+ n0 _, K5 n#include <iostream>
8 c6 T4 ?# C5 O% u" Pusing namespace std;
! }6 _7 X; i5 P  b! o9 f% Kclass Human
5 @: `7 C0 Z% G8 G, S+ i: c3 Y! R{$ q5 c7 ^5 ^' B- z5 E
public:
# S0 N! F0 }5 i1 `$ W/ h void GetHeight(){cout<<Height;}$ c: |+ \: R9 p4 ^
void GetWeight(){cout<<Weight;}
% d* |% L- O& |, t2 ] void SetHeight(int x){Height=x;}
  P) n( e1 L4 W: {! B/ k  P$ t' B void SetWeight(int y){Weight=y;}
0 y6 c" _3 f- b; v: `, [private:! Y& G+ d1 ^" \2 U
int Height;
/ ]% }% O8 N4 _1 @" P- J int Weight;$ t7 x8 }4 |6 M5 a7 z; W9 {5 x
};
6 o8 L3 U2 K% t0 C6 b8 O+ s+ h/ N6 e& P2 K& z* l9 `0 X! ?
void main(void)
$ F- Z4 V% A" k; t2 t, ]4 N{
  K: R, i' j5 o; n) _. Z9 e4 o   Human Lee;
* Y9 x2 E6 ~+ v# y, g   Lee.SetHeight(172);( U* ]6 ~& \; R
   cout<<"Lee的身高是:";6 X) M4 u* K0 @4 l
   Lee.GetHeight();, D" Q( l; V: s4 F- X
   cout<<endl;+ K7 h. H  s% H! z$ S$ O2 P" P
   Lee.SetWeight(120);2 t* Z. ^5 _& e7 }3 w. I
   cout<<"Lee的体重是:";* u6 q" K2 Z( p6 m
   Lee.GetWeight();2 C1 D2 S2 }, Y
   cout<<endl;3 w! t  G) ?$ O
}4 E8 G+ L9 W/ P# d2 }: W
第二种写法:9 ~) I! c* W( Z5 x2 v* q
#include <iostream>
8 ?8 C- G4 ?( y* D* J5 F/ Zusing namespace std;
" u* `. j  o, J) P+ {% xclass Human& m+ R- }; m6 m" V: Z
{) [; [, ~& F& V1 n$ V
public:0 X) [4 O2 F. |$ P% x* m2 w/ M
void GetHeight();8 n4 d+ M- d9 o& g
    void GetWeight();
9 s" `2 N4 b' M2 G, h- K void SetHeight(int x);
- D. ?" B- z' o7 j void SetWeight(int y);
7 A& y' P: a# V2 K$ I+ ]+ Pprivate:
9 O- ]( ?  Y1 m2 R5 f3 D int Height;; J: R; V" p) R2 O
int Weight;
) b  J$ ]/ i6 x; g2 P};6 H! `+ c: z8 [: d
void Human::SetHeight(int x)
3 N8 ^( l9 \1 x* }{
' ^0 e. @! _' ?2 O' r Height=x;
& a; k( D$ X# T5 \  }. u7 |& g' b}
! A; Q5 w6 y& d0 m& |! h: O4 Tvoid Human::GetHeight()! ^& I, w- c8 ]) {3 p
{: {, X8 B* H6 p3 |, V. W6 p4 Q
cout<<Height;
6 D# }" C+ j7 }7 q/ Y+ I5 }# ]}
0 y8 T8 a& B7 X7 d3 p# {7 Dvoid Human::SetWeight(int y)% |. C; g' A% R0 ]% `% Q, O) {
{
+ m( _) _" A8 a. w5 D0 K4 |1 h# x Weight=y;# A3 T0 r  _; Q
}
3 `3 Y3 w- G; F+ o0 q; x( y$ V8 Fvoid Human::GetWeight()
7 l* E- \. ~9 x( U, S6 q0 i{
6 t6 G9 `. X2 o% e0 O9 K cout<<Weight;
, x; V! k5 m1 b- d$ H. |}
* M: Q$ O/ o+ z( tvoid main(void): d2 B4 s' N+ m1 L$ J# D
{1 }7 J$ n, L  Q- f( @
   Human Lee;
* g2 @* f& y( y5 E2 E+ b   Lee.SetHeight(172);
+ z$ F* ]' j' F5 i& R+ `   cout<<"Lee的身高是:";3 J4 G; Q; T+ p$ B
   Lee.GetHeight();
" r: V4 Z+ I( d* F# R. c   cout<<endl;
! f& j3 |4 e, @! ~+ O   Lee.SetWeight(120);+ l5 k, s& s% b1 r  e, x
   cout<<"Lee的体重是:";" W( T, i9 m4 E) `2 t# t( T
   Lee.GetWeight();2 o) Q: R6 B1 {, C0 W
   cout<<endl;; B$ W/ p/ A. l) f, e8 a4 }
}
4 {7 s6 P& B% ]( r3 B3 R推荐第二种写法
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