字符串流的输入问题

[九个太阳2023]

该程序是对remainder.txt文件中的成对字符串进行操作，对于第一个字符串，要去掉两个字符串中相同的部分，并按字符顺序输出
remainder.txt文件内容为：
computer program
Write program
thatwill askthe
whole number

******************************
程序如下：
#include <iostream>
#include <algorithm>
#include <fstream>

using namespace std;

int main()
{
ifstream in("remainder.txt");

for (string s,t,u;in>>s>>t;u="")
{
sort(s.begin(),s.end());
sort(t.begin(),t.end());
set_difference(s.begin(),s.end(),t.begin(),t.end(),back_inserter(u));

cout<<u<<endl;
}

return 0;
}

编译的时候出现如下错误：
Deleting intermediate files and output files for project 'ch0515 - Win32 Debug'.
--------------------Configuration: ch0515 - Win32 Debug--------------------
Compiling...
ch0515.cpp
e:\my program\ch05\ch0515.cpp(11) : error C2679: binary '>>' : no operator defined which takes a right-hand operand of type 'class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >' (or there is no acceptable conversi
on)
e:\my program\ch05\ch0515.cpp(17) : error C2679: binary '<<' : no operator defined which takes a right-hand operand of type 'class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >' (or there is no acceptable conversi
on)
Error executing cl.exe.

ch0515.exe - 2 error(s), 0 warning(s)

请高手指点~~

[taodm]

#include <string>

[九个太阳2023]

好像还是不行啊~~
Deleting intermediate files and output files for project 'ch0515 - Win32 Debug'.
--------------------Configuration: ch0515 - Win32 Debug--------------------
Compiling...
ch0515.cpp
c:\program files\microsoft visual studio\vc98\include\iterator(82) : error C2039: 'push_back' : is not a member of 'basic_string<char,struct std::char_traits<char>,class std::allocator<char> >'
c:\program files\microsoft visual studio\vc98\include\iterator(82) : while compiling class-template member function 'class std::back_insert_iterator<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > > &_
_thiscall std::back_insert_iterator<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > >::operator =(const char &)'
Error executing cl.exe.

ch0515.exe - 1 error(s), 0 warning(s)

[taodm]

你用的VC6啊？扔了吧。换VC2005express或者wxdevcpp

[九个太阳2023]

汗~~
跟编译器有关？？

[buzhihuigai]

“< <” 你的这个中间怎么会有空格？

[hastings]

class String :public string
{
public:
	void push_back(const char& c)
	{
		(*this).append(1,c);
	}
};
int   main(void) 
{
	ifstream   in("remainder.txt");
	for(String  s,t,u;in>>s>>t;u.assign(""))
	{
		sort(s.begin(),s.end()); 
		sort(t.begin(),t.end()); 
		set_difference(s.begin(),s.end(),t.begin(),t.end(),std::back_inserter(u));
		cout <<u <<endl; 
	}
	return 0;
}

[九个太阳2023]

LS的代码还是没有解决问题，编译的时候还是出现了原来的错误
Deleting intermediate files and output files for project 'ch0515 - Win32 Debug'.
--------------------Configuration: ch0515 - Win32 Debug--------------------
Compiling...
ch0515.cpp
c:\program files\microsoft visual studio\vc98\include\iterator(82) : error C2039: 'push_back' : is not a member of 'basic_string<char,struct std::char_traits<char>,class std::allocator<char> >'
c:\program files\microsoft visual studio\vc98\include\iterator(82) : while compiling class-template member function 'class std::back_insert_iterator<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > > &_
_thiscall std::back_insert_iterator<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > >::operator =(const char &)'
Error executing cl.exe.

ch0515.exe - 1 error(s), 0 warning(s)

[Great_qiang]

#include <iostream>
#include <algorithm>
#include <fstream>
#include <string>
using namespace std;

int main()
{
ifstream in("remainder.txt");

for (string s,t,u;in >> t >>s;u="")
{
sort(s.begin(),s.end());
sort(t.begin(),t.end());
//set_difference(s.begin(),s.end(),t.begin(),t.end(),back_inserter(u)); 这句有了问题。

cout <<u <<endl;
}

return 0;
}
呵呵

[hastings]

7楼代码在VC6上通过.

[hastings]

注意:VC6的string类没有push_back()函数,所以
须自己创建一个.