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#include<string>
#include <iostream>
#include <vector>
#include <fstream>
using namespace std;
class A{
public:
A(int a=0,string tmp="") :m_c(a), m_str(tmp){};
friend ostream & operator <<(ostream& out, const A& tmp)
{
return out << tmp.m_c<< tmp.m_str;
}
friend istream & operator >>(istream& t, A& tmp)
{
return t >> tmp.m_str >> tmp.m_c;
}
private:
int m_c;
string m_str;
int m_b;//////////////////////////////////////////////////////////////////////////////////问题所在///////////////////////////////////
};
void func(vector<A>& tmp)
{
ofstream ofs;
ofs.open("./a.txt", ios::out);
vector<A>::iterator it = tmp.begin();
while (it!=tmp.end())
{
ofs << *it << endl;
it++;
}
ofs.close();
}
void func2(vector <A>& tmp)
{
ifstream ifs;
ifs.open("./a.txt", ios::in);
A a;
while (!ifs.eof())
{
ifs >> a;
tmp.push_back(a);
}
ifs.close();
}
int main(void)
{
vector<A> ver;
vector<A> vec;
A a(1, "xuwe12i");
A b(2, "xweifds");
A c(3, "xweiwe");
vec.push_back(a);
vec.push_back(b);
vec.push_back(c);
func(vec);
func2(ver);
vector<A>::iterator it = ver.begin();
while (it != ver.end())
{
cout << *it << endl;
++it;
}
system("pause");
return 0;
}
问题:为什么那个m_b 如何我不注释掉 就没办法从文件读出东西,只有注释了 就可以正常运行 |