帮忙找错误，谢谢！（在线等）
一个程序，有错误，但不知道在哪，哪位看看
//student.h
#ifndef STUDENT
#define STUDENT

#include <iostream>
#include <iomanip>
#include <string>

using namespace std;

class Student
{
public:
//Student(){++i;}
//~Student(){--i;}

int total();
int average();
char grade();

friend ostream&operator < <(ostream&,Student&);
friend istream&operator > > (istream&,Student&);

private:
//static int i;
string name;
int num,C,VB,Computer;
};

//static int Student::i = 0;

int Student::total()
{
return C+VB+Computer;
}

int Student::average()
{
return total()/3;
}

char Student::grade()
{
int t = average();

if(t> =90&&t <=100)
return 'A ';
else if(t> =80&&t <90)
return 'B ';
else if(t> =70&&t <80)
return 'C ';
else if(t> =60&&t <70)
return 'D ';
else
cout < < "Worng or It 's too bad. " < <endl;
}

ostream& operator < <(ostream& out,Student& st)
{
out < <setw(6) < <st.num
< <setw(10) < <st.name
< <setw(3) < <st.C
< <setw(11) < <st.VB
< <setw(8) < <st.Computer;
return out;
}

istream& operator> > (istream& in,Student& st)
{
in > > setw(6)> > st.num
> > setw(10)> > st.name
> > setw(3)> > st.C
> > setw(11)> > st.VB
> > setw(8)> > st.Computer;

return in;
}

#endif


//student.cpp

#include <iostream>
#include "student.h "

using namespace std;

void sort(Student s[],int n);
void main()
{
const int n=6;
Student s[n];

cout < < "Input Type " < <endl;
cout < < "number " < < "name " < < "C " < < "Visual Basic " < < "Computer " < <endl;
for(int i=0;i <7;++i)
{
cin> > s[i]> > '\n ';
}

cout < < "*************************************** " < <endl;
cout < < "Output Type " < <endl;
cout < < "number " < < "name " < < "C " < < "Visual Basic " < < "Computer " < < "Total " < < "Average " < < "grades " < <endl;
sort(s,n);
for(int i=0;i <7;++i)
{
cout < <s[i] < <setw(5) < <s[i].total() < <setw(7) < <s[i].average() < <setw(6) < <s[i].grade() < <endl;

}

}


void sort(Student s[],int n)
{
for(int i=0;i <n;i++)
for(int j=n;j> =0;j--)
{
if(s[j].average()> s[j+1].average())
std::swap(s[j],s[j+1]);
}
}




[解决办法]
for(int i=0;i <7;++i)
{
cin> > s[i]> > '\n ';
}＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝
for(int i=0;i <7;++i)
{
cin> > s[i];
}
就可以了．．
[解决办法]
for(int i=0;i <7;++i)
{
cin> > s[i]； //这里
}

cout < < "*************************************** " < <endl;
cout < < "Output Type " < <endl;
cout < < "number " < < "name " < < "C " < < "Visual Basic " < < "Computer " < < "Total " < < "Average " < < "grades " < <endl;
sort(s,n);
for(i=0;i <7;++i) //这里int去掉 VC6.0的问题
{
cout < <s[i] < <setw(5) < <s[i].total() < <setw(7) < <s[i].average() < <setw(6) < <s[i].grade() < <endl;
}

}