del_vector.cpp

01背包问题最简单实现

#include <iostream>
#include <vector>
using namespace std;
int i=0,j=0;
class CDemo
{
public:
	CDemo():str(NULL){cout<<"Constructor : "<<i++<<endl;};
	CDemo(const CDemo &cd)
	{
		cout<<"Copy Constructor : "<<i++<<endl;
		this->str = new char[strlen(cd.str)+1];
		strcpy(str,cd.str);
	};
	~CDemo()
	{
		if (str) {
			cout<<"destructor"<<j++<<endl;
			delete [] str;
		}
	};
	char * str;
};
int main()
{
	CDemo d1;
	d1.str=new char[32];
	strcpy(d1.str,"Trend micro");

	vector<CDemo> *a1=new vector<CDemo>();
	a1->push_back(d1);
// 	delete a1;
	return 0;
}