Question

this is in my .cpp

void Sequence::push_back(const value_type& value)
{
}

this is in my .h under public

typedef int value_type;  

void push_back(const value_type& v);

this is the code i have to produce in my .cpp

   try {
       cout << "Testing push_back()" << endl;
       cout << "-------------------" << endl;
       Sequence data(3);
       data[0] = 100;
       data[1] = 200;
       data[2] = 300;
       data.push_back(400);
       data.push_back(500);
       cout << "Sequence: " << data << endl;
       cout << "Should be: <100, 200, 300, 400, 500>" << endl << endl;
   }

   catch (exception& e)
   {
       cout << "Exception: " << e.what() << endl << endl;
   }

im trying to figure out what do i write in the void Sequence::push_back to produce this output.

Answer 1

class Sequence {
        private:
        int count;
        int capacity;
        int *data;

        public:
        typedef int value_type;  
        Sequence(int);
        void push_back(const value_type& v);
};

Sequence::Sequence(int c) {
        capacity = c;
        data = new value_type[c];
        count = 0;
}
void Sequence::push_back(const value_type& v) {
        if(count < capacity) {
                data[count++] = v;
        }
}

It shoudl be like above.