fstream with array error

[gambette]

i tried to read/write an array to a file but gotten the "no matching operator" error. I've read through for possible causes for this error but my code doesnt commit any syntax error. Need some advice!

readData function

void Registration::readData()
{
    inFile.open("rinput.txt");
    inFile >> studentId >> semester >> count;

    for(int i = 0; i < count; i++)
    {
        inFile >> courses[i]; //error in this line
    }
    inFile.close();
}

writeData function

void Registration::writeData()
{
    outFile.open("routput.txt");
    outFile << "Student ID: " << studentId << '\n'
            << "Semester:   " << semester << '\n';

    for(int i = 0; i < count; i++)
    {
        outFile << courses[i] << '\n'; //error in this line
    }
    outFile.close();
}

[Peter87]

What is the type of courses[i] and has the << and >> operators been overloaded to handle that type?

[gambette]

the array courses[i] is declare in a class called registration. I've also declared 'Course courses[MaxCourses];' in the .h file.

previously it was overloaded but i removed the friend operator to this ( as part of my tasks given).
I've read through many similar articles but is often the misuse of the '<<' and '>>' operator. Could the problem be somewhere else?