I'm working on an assignment that implements a university with Departments, Students, Faculties, ect. I'm still fairly new to programing and I'm stuck at trying to run an if statement that runs if the two values are identical. This is the function I'm trying to work with;

bool University::RemoveADepartment(long depId)
{
    for (int i = 0; i < Departments.size(); i  ) // Departments is a Vector of type Department class
    {
        if (Departments[i].ID == depId) // ID is a protected member of Department class
        {
            Departments.erase(Departments.begin()   i);
            return success;
        }
    }
    cout << "Department ID was not found to delete." << endl;
    return failure;
}

Aside from turning ID into a public member, how would I go about comparing depID to the Department::ID?