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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:
1 H; y3 j0 {8 V5 {) q  P3 |5 l#include <iostream>; _. }. p# p! F% f6 {$ O) w3 b
using namespace std;8 c( C2 R3 [! q0 r
class Human' h  t$ n/ S( e  F; G
{
* Z6 ^2 ^# e0 s5 y4 F8 }; M- L. M7 [public:
; ]; }% g3 n, P) t4 Q. j void GetHeight(){cout<<Height;}
0 j: _6 L- i2 z1 o  D/ S6 n( ^1 o void GetWeight(){cout<<Weight;}% `* r- ^4 ^) y; l" B" }
void SetHeight(int x){Height=x;}3 f; d! g7 }* H1 M
void SetWeight(int y){Weight=y;}. G% S, {8 j  N" G3 V$ C3 a4 t* }
private:1 h$ y2 d# ?  c+ G
int Height;" F, U1 I: L& q$ {  g; T
int Weight;. G1 r6 b! s4 D3 h, D0 b! D* |: r3 w
};
8 r, r  b8 J8 C# m* }
# j0 x; \0 h$ T' E* Ovoid main(void)# w9 C# _  v; C8 p7 |2 C, l
{
3 }9 w* Z' U% S- v+ V" k; R   Human Lee;0 v  x9 Y7 d1 N/ \$ {! z
   Lee.SetHeight(172);
' I" m5 K* V8 V& e% @2 c9 n7 m   cout<<"Lee的身高是:";; S( \7 O, K% p2 {
   Lee.GetHeight();
* N( P4 L3 v* @( B8 L- h0 ~1 x   cout<<endl;5 \4 X  l, O% H7 P8 w
   Lee.SetWeight(120);
: E2 b6 u- t* x8 ^  v# W, D   cout<<"Lee的体重是:";+ [' I- f! Q2 s6 X
   Lee.GetWeight();
. C0 X/ D- I$ a6 ]# M   cout<<endl;
8 b& t( h# g, G# ~" a}
& v8 U# N0 B2 t9 e- j第二种写法:
' T6 t/ D+ o5 _/ h' z#include <iostream>6 t8 ^+ P) A# Z+ {- `
using namespace std;0 X3 x6 v5 x) `
class Human
; I) o: Y$ x6 ~% W$ k7 F{
8 V5 R8 d8 d& s! [& V0 v8 A9 }: ipublic:
: Z7 m; V. o6 b0 H  j0 S" E void GetHeight();8 e  D4 |" o  K! j& _
    void GetWeight();( c" z3 C& x6 W% u" X8 e
void SetHeight(int x);
. ?* p2 G! X% _& D void SetWeight(int y);% A, X6 t2 Z1 R4 @/ _/ V" Z3 P
private:; n" x# `) S2 y3 r
int Height;2 A# Z" l4 m9 i7 J2 f9 x- L' K
int Weight;8 x3 n0 e: l% |1 ~1 X
};
( g9 `( Z* s9 T' I9 ]) z% }- Bvoid Human::SetHeight(int x)
; F1 m, t, `6 g8 b+ q{
5 y: r, a4 U: l% t/ b% ] Height=x;
) @- e9 T- X# U  J3 \7 Q3 s}8 n# C+ b$ E9 E! {
void Human::GetHeight()
9 y' @3 L7 Y5 F3 A. P! n2 d{
' V  o# k% g8 }' z$ [ cout<<Height;' @# T9 h( E+ g1 c! K
}
2 Y* W" o$ h' `6 @) G8 ]void Human::SetWeight(int y)9 L) E0 U+ {" Y1 o1 z( _+ V; w
{
+ u  `( w2 K+ Q/ y4 _' v Weight=y;, @( P$ \1 V' o" T" U7 m
}! y! z8 `/ I8 M4 M1 J3 ?% \
void Human::GetWeight()+ h# _  d  x8 T5 \: M4 c7 z
{
- m3 }& b) n/ V6 A6 `3 a cout<<Weight;
+ }6 k3 A9 |2 B0 T' V}: l* R+ N0 `& S8 N& S" T5 j
void main(void)
6 A3 n* Y) M4 k- m6 z{
  T% W; m  h6 r0 |# c1 z+ B0 e   Human Lee;
) \$ E0 j8 G! h  \' a8 i! c   Lee.SetHeight(172);
" J1 R3 m- r6 f0 V+ M   cout<<"Lee的身高是:";  @4 j' a- u4 t# ?2 r1 e* t
   Lee.GetHeight();  N2 g5 D- v% j+ U' X
   cout<<endl;! s* }. ?5 k$ @
   Lee.SetWeight(120);
3 O/ r2 `( e7 C2 Y% L" J2 g' O   cout<<"Lee的体重是:";3 E" K4 [+ J- U* h, H, t
   Lee.GetWeight();
/ M( D9 S1 a  O- ]   cout<<endl;
9 f' T$ U1 c3 R' c; p: x/ w}4 H1 V7 ?; _3 {
推荐第二种写法
/ \& Z8 e4 x  c2 P7 b% Q1 t2 a
5 S/ |- l4 z& q' G2 D3 p& P; _6 R- I  y  z' I
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