输出vector迭代器，出错。

[kaponihap]

#include <iostream>
#include <fstream>
#include <vector>
#include <string>
#include<iterator>

using namespace std;

typedef vector<vector<string> > vec_ins;
typedef vector<vector<string> >::iterator iter;
typedef vector<string>::iterator it_str;


ifstream& open_file(ifstream &in, const string &file)
{
in.close();
in.clear();
in.open(file.c_str());
return in;
}

int main()
{
int i=0,max_line;
vec_ins a;
vector<string> v_str[100];
string ss_line;
it_str iter_str;
iter it;
ifstream is;
if ( !open_file(is, "text_in.txt") )
{
cerr << "No input file!" << endl;
return EXIT_FAILURE;
}
while ( getline(is, ss_line) )
{
v_str[i].push_back(ss_line);
a.push_back(v_str[i++]);
}
max_line=i;
for(i=0;i<max_line;i++)
for(iter_str=v_str[i].begin();iter_str!=v_str[i].end();iter_str++)
cout<<*iter_str<<endl;
for(it=a.begin();it!=a.end();it++)
cout<<*it<<endl;
}

error C2679: binary '<<' : no operator defined which takes a right-hand operand of type 'class std::vector<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >,class std::allocator<c
lass std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > > >' (or there is no acceptable conversion)
执行 cl.exe 时出错.


我想输出vector，但是老是报错，实在不知道如何搞，求高手帮助。

[猫已经找不回了]

max_line=i;
for(i=0;i <max_line;i++)
for(iter_str=v_str[i].begin();iter_str!=v_str[i].end();iter_str++)
cout < <*iter_str < <endl;
for(it=a.begin();it!=a.end();it++) //it指向的是vector <string>数据，<<无法直接输出，要么重载操作符，要么再套迭代器
cout < <*it < <endl;
}

[猫已经找不回了]

typedef vector <vector <string> > vec_ins; 
typedef vector <vector <string> >::iterator iter; 
typedef vector <string>::iterator it_str; 


ifstream& open_file(ifstream &in, const string &file) 
{ 
in.close(); 
in.clear(); 
in.open(file.c_str()); 
return in; 
} 

int main() 
{ 
	int i=0,max_line; 
    vec_ins a; 
    vector <string> v_str[100]; 
	string ss_line; 
	it_str iter_str; 
	iter it; 
		ifstream is; 
	if ( !open_file(is, "text_in.txt") ) 
	{ 
	cerr << "No input file!" << endl; 
	return EXIT_FAILURE; 
	} 
		while ( getline(is, ss_line) ) 
	{ 
	v_str[i].push_back(ss_line); 
	a.push_back(v_str[i++]); 
	} 
	max_line=i; 
	for(i=0;i <max_line;i++) 
		for(iter_str=v_str[i].begin();iter_str!=v_str[i].end();iter_str++) 
			cout <<*iter_str <<endl; 
	for(it=a.begin();it!=a.end();it++) 
	{
		cout<<" :";
		for(iter_str=it->begin();iter_str!=it->end();iter_str++)    //用iter_str迭代器再去输出it，这样就可以了
			cout <<*iter_str <<endl; 
	}
} 

[mengde007]

楼上真快啊……

[se7venhigh]

个人觉得要是只是输出内容的话，iter_str就够了，试了下能够按原文输出内容的。

[Paradin]

顶猫狗

[beyond071]

学习了