C++中vector容器存放字符串，输出错误

 #include<iostream>
#include<vector>
#include<string>
using namespace std;
int main()
{
    vector<char*> Sentence;
    vector<char*>::iterator p;
    char ch[100]="\0";
    while(cin.getline(ch,100,'\n'))
    {
        Sentence.push_back(ch);
        //cout<<Sentence.back()<<endl;//在while循环中可以正确输出
    }
//输出的每一个元素均为空行
    for(p=Sentence.begin();p!=Sentence.end();++p)
    {
        cout<<*p<<endl;
    }
    return 0;
}