Working with Class and Objects: Write below given code for vector of objects. Re

Question

Working with Class and Objects:

Write below given code for vector of objects.
Reference code for a vector of objects:
#include <string>
#include <vector>
using namespace std;
class C{
int x,y; //location
public:
//constructor
C (int setX,int setY)
{
x = setX;
y = setY;
}
void print()
{
cout<<"x= "<<x<<" y= "<<y<<endl;
}
~C(){ }
};
int main()
{
vector <C> gameObjects;
gameObjects.push_back(C(0,30));
gameObjects.push_back(C(1,2));
gameObjects.at(0).print();
gameObjects.at(1).print();
return 0;
}
Write a program that holds database for students. Keep students

Explanation / Answer

#include <iostream>
#include <list>
#include <string>
using namespace std;

class Student
{
public:
   // ... various functions to perform the required operations

private:
   string name, ID;
   int mark;
};

int main()
{
    list<Student> students;

    // Read from data base

    while (more_students())
    {
       Student temp;
       temp.read();
       students.push_back (temp);
    }

    // Now print the students that failed (mark < 60%) - of
    // course, the particular Student object should provide a
    // member-function (say, passed()) that will determine that

   list<Student>::iterator i;
   for (i = students.begin(); i != students.end(); ++i)
   {
      if (! i->passed())    // iterators also provide operator ->
      {
         cout << "The student " << *i << " failed." << endl;
          // provided that class Student provides the overloaded
          // stream insertion operator <<
      }
   }

   // Now remove the failed students (of course, this could have
   // been done in the previous loop)

   i = students.begin()
   while (i != students.end())
   {
      if (! i->passed())
      {
         i = students.erase (i);
      }
      else
      {
         ++i;
      }
   }

   // ...

   return 0;
}

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