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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:7 M1 |$ n* `" ]8 N1 r4 [& `
#include <iostream>& ~2 Z; o; t8 w
using namespace std;& d2 {6 E; D6 m$ K1 I- C1 o- k. q
class Human. p+ W! J  h, c6 }
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public:0 R/ e9 h, O! m# }% ~/ n
void GetHeight(){cout<<Height;}
( Z9 v! Q& O5 a6 I+ s* h void GetWeight(){cout<<Weight;}
5 m2 Q+ d: M! q1 Q void SetHeight(int x){Height=x;}, F/ m. J' S2 L4 k
void SetWeight(int y){Weight=y;}
0 t  ]( }' ?0 e: n6 f" H) D* vprivate:
  `& }7 h( B& Y6 e6 I int Height;" t2 h/ n' w! e0 R$ b$ |  _* N, X
int Weight;, h" s2 Y3 g+ b& a* b
};
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. e' t" X/ p6 svoid main(void)
3 p; {9 Y+ x# @. a- p0 k{+ A: _! w" C, w# k; f7 S6 {
   Human Lee;
: s5 y! a) Q2 d. P1 V, K8 P1 W6 q   Lee.SetHeight(172);
" _* \: C4 s. q   cout<<"Lee的身高是:";: B4 r6 s6 X6 w+ i
   Lee.GetHeight();
* R7 J# b0 Q- D   cout<<endl;
% h. M0 i9 H3 G  g2 Y$ |   Lee.SetWeight(120);. A9 }* R" g$ v: u2 n, N6 r
   cout<<"Lee的体重是:";( Q) |0 C3 B3 N7 J2 I4 G5 z7 N& N& ]
   Lee.GetWeight();6 z, H3 y" Q" T! U0 p
   cout<<endl;% h  |, q1 Z' |) [0 |- k
}
1 ]& w; `2 z2 u$ [, ^第二种写法:
9 m& {# x4 A. r8 d: C9 g#include <iostream>
! N$ J6 S1 Z7 X$ W* Eusing namespace std;5 E) g+ b  \4 k2 R) o9 Q/ q. _& Y  M' n
class Human
* H" [: Y- Z& z# q) K{
9 J8 w5 ^  i: M, u# z( Spublic:
% m, X# G- V. Z4 ~ void GetHeight();( h" h( W% M  W* B- I
    void GetWeight();
' a: \( V) @0 z7 t& A8 T6 ~ void SetHeight(int x);! p/ [3 K7 l/ a5 b) P9 k  T
void SetWeight(int y);
! ~( ?3 h5 H6 b; o! E0 eprivate:
) q) H% E: \4 ]- E2 c0 }7 Z, v int Height;
( j9 K/ B: C; U$ W6 |- t% u7 Z9 H int Weight;; X4 d8 ]% l1 E( W0 y
};
5 U2 x6 O, ?) Dvoid Human::SetHeight(int x). `1 F+ B: O: X& o
{
- Y1 S2 Z) y% ~$ g: G Height=x;% m# ~* a) }1 ~( J& S+ z, j' |
}
5 `& T6 s; A. Yvoid Human::GetHeight()) d" \6 S! J4 \! \5 ~1 G
{% g$ f8 j8 D4 N
cout<<Height;
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void Human::SetWeight(int y)9 G; [8 ]4 n) m% n% Q( p; c
{
) ^; O5 ~7 ~, w1 D& Z/ F; a Weight=y;$ B- Z/ ^' c7 ?6 w
}
9 R2 B3 s# V7 Y5 s! J  l6 F( Dvoid Human::GetWeight(); @. I9 x: _, i
{
& U$ U& t, J3 P- f8 E% ]5 Q5 G cout<<Weight;
1 q0 h7 q, S4 h' U1 K}7 `6 Z3 r$ h6 J2 Z. }
void main(void)
) v5 E8 ]; f0 k; h2 ]  i, M{/ n8 i1 ~2 x8 [6 x
   Human Lee;
1 N" e2 u4 M1 O3 M$ G5 M  c   Lee.SetHeight(172);
6 R! d, l8 M3 |: G1 w' K6 u   cout<<"Lee的身高是:";  H  k- F8 B! z- k! e
   Lee.GetHeight();0 J4 O* z5 z3 ]) t
   cout<<endl;  k  n& V+ b2 K! j
   Lee.SetWeight(120);1 W" k- l+ T7 H& _  @
   cout<<"Lee的体重是:";; u' O- W; ~8 J6 a( g0 p$ C
   Lee.GetWeight();* ]1 B. D: K) d7 e. V' p
   cout<<endl;  w2 T7 d' O7 U# U) x
}
1 s( }" w5 K3 P9 D1 T推荐第二种写法
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