Using vector of user defined class type objects

Question

Working on solving a simple problem in C++, want to understand how I could use vector of objects of user defined class type without fixed(worst case) number of elements allo

Answer 1

You can just declare your vector first:

vector<grades> students;

And then read the values, while pushing elements in the vector:

while(!infile.eof()) 
{
    grades student;
    infile >> student.mName;
    infile >> student.mSurname;
    infile >> student.mAge;
    infile >> student.mLocation;
    infile >> student.mMarks;
    students.push_back(student);
}

You don't need no_of_records anymore, since the number of records will be students.size().