请问这段代码为什么编译正常，运行时却出错！

include <iostream>
#include <vector>
using namespace std;

class counted{
    int id;
    static int count ;
public:
    counted():id(count++){
    cout<<id<<endl<<"it's being created"<<endl;
    }
    ~counted(){
    cout<<id--<<endl<<"it's being destroyed"<<endl;
    }
};

int counted::count = 0;

int main(){
    vector<counted*>  countArray;
    for(int i=0;i<5;i++)
        {
            if((countArray[i] = new counted)==0)
                cerr<<"内存申请失败";
    }
    return 1;
}