#include <iostream>
#include <memory>
#include <cstring>
//定義一個Baseball的類別
class BaseballPlayer
{
private: enum
{
MAX_STRING_LENGTH = 20
};
//定義私用資料及函式成員
private: char name[ MAX_STRING_LENGTH + 1 ]; //打擊者姓名
private: int fires; //打擊次數
private: int safes; //安打次數
//宣告私用的函數成員countsafe的原型用以計算打擊者打擊率
//定義公用資函數成員
public: BaseballPlayer( char const *theName, int theFires, int theSafes )
: fires( theFires ), safes( theSafes )
{
::strncpy( name, theName, MAX_STRING_LENGTH );
}
// 拷貝建構子
public: BaseballPlayer( BaseballPlayer const &player )
: fires( player.fires ), safes( player.safes )
{
::strncpy( name, player.name, MAX_STRING_LENGTH );
}
public: std::ostream& show( std::ostream &outputStream );
//宣告公用的函式數成員inputplayer的原型用以顯示打擊者資料
};
std::ostream& BaseballPlayer::show( std::ostream &outputStream ) //類別外實現showplayer函式成員
{
//透過countsafe 函式成員計算並傳回打擊率
outputStream << "================================" << std::endl;
outputStream << "打擊者：" << name << std::endl; //顯示打擊者姓名
outputStream << "打擊次數：" << fires << std::endl; //顯示打擊次數
outputStream << "安打次數：" << safes << std::endl; //顯示安打次數
return outputStream;
}
int main()
{
using namespace std;
// 還沒好建構物件
char rawMemory[ 2 * sizeof(BaseballPlayer) ];
BaseballPlayer *b = reinterpret_cast<BaseballPlayer*>( rawMemory );
// 逐一喚起建構子
std::uninitialized_fill( b, b + 2, BaseballPlayer( "qq", 100, 2 ) );
cout << "================================" << endl;
cout << "顯示資料" << endl;
for ( int i = 0; i < 2; ++i )
{
b[ i ].show( cout );
}
// 呼叫解構子摧毀物件
for( int index = 0; index != 2; ++index )
b[ index ].~BaseballPlayer();
cin.get();
}