HELP! i have to create a header file to run this program cant change anything in

Question

HELP! i have to create a header file to run this program cant change anything in the main though which is the program below. It explains where it says part 1, i cant just use #inculde<vector> my header file has to make a vector class to run the program below, thats where I'm lost.

#include <iostream>
#include <string>       //replace this with your own class when ready
#include "myVector.h"   //include this instead of the stl vector class when ready
using namespace std;

//Part 1: Run the test code using the stl vector class. Make sure you understand the output
//           and how the vector class works.
//Part 2: Create your own vector class (in the file "myVector.h"). To test your vector class,
//           Swap the #include statements above so that the test code uses your vector class instead of the stl vector class.
//       
//           YOU MAY NOT CHANGE ANY PART OF THE TEST CODE other than swapping the included files.
//         Your vector class must yield the exact same results from the test code as the stl vector class,
//         with the following exceptions: The "capacity" method may return different values (ie, you may choose any resizing method you want,
//           but you should consider what is the smartest approach with respect to efficiency). Additionally, for the 0-parameter constructor and
//           the 1-parameter, you do not need to initialize the values of the vector items (but you must for the 2-parameter constructor).
//         Beyond these items, your code must behave the same as for the stl vector.

int main()
{
   vector<int> myvecA;
   vector<int> myvecB(10);
   vector<int> myvecC(5, -9);
   vector<string> myvecD(6, "Are we there yet?");

   //The size method should return how many items, abstractly,
   //the vector currently holds.
   cout << "Vector A size: " << myvecA.size() << endl;
   cout << "Vector B size: " << myvecB.size() << endl;
   cout << "Vector C size: " << myvecC.size() << endl;
   cout << "Vector D size: " << myvecD.size() << endl;

   //Capacity should report how large the array holding the items is.
   //This size will be at least that of 'size()', but could be larger.
   cout << "Vector A capacity: " << myvecA.capacity() << endl;
   cout << "Vector B capacity: " << myvecB.capacity() << endl;
   cout << "Vector C capacity: " << myvecC.capacity() << endl;
   cout << "Vector D capacity: " << myvecD.capacity() << endl;

   //You can access the items in the array
   //with the '[]' operator.
   cout << endl;
   cout << "Vector B: " << endl;
   myvecB[3] = 43;
   myvecB[7] = 17;
   for (int i = 0; i<myvecB.size(); i++)
       cout << myvecB[i] << endl;

   cout << endl;
   cout << "Vector C: " << endl;
   myvecC[2] = 50;
   for (int i = 0; i<myvecC.size(); i++)
       cout << myvecC[i] << endl;

   cout << endl;
   cout << "Vector D: " << endl;
   myvecD[5] = "Shut up kids.";
   for (int i = 0; i<myvecD.size(); i++)
       cout << myvecD[i] << endl;

   //An important ability of vectors is the ability to push items to the back
   //of the vector, which may require increasing the capacity behind the scenes.
   for (int i = 0; i<16; i++)
       myvecA.push_back(2380 + i);
   cout << endl;
   cout << "Vector A's size and capacity:" << endl;
   cout << "Vector A size: " << myvecA.size() << endl;
   cout << "Vector A capacity: " << myvecA.capacity() << endl;

   //vector's also have full stack functionality. Consider the "pop_back" method:
   for (int i = 0; i<10; i++)
   {
       cout << "About to pop: " << myvecA.back() << endl;
       myvecA.pop_back();
   }

   cout << endl;
   cout << "Vector A's size and capacity:" << endl;
   cout << "Vector A size: " << myvecA.size() << endl;
   cout << "Vector A capacity: " << myvecA.capacity() << endl;

   //Here is some addtional demo of the [] operator and how it works,
   //as well as the "push_back" method.
   cout << endl;
   for (int i = 0; i<5; i++)
       myvecB[i] = i * 10;

   myvecB.push_back(9990);
   myvecB.push_back(9991);
   myvecB.push_back(9992);
   myvecB.push_back(9993);
   myvecB.push_back(9994);

   for (int i = 0; i<myvecB.size(); i++)
       cout << myvecB[i] << endl;

   //Now we will see, for a large example, how the vector adjusts its capacity:
   cout << endl;
   int max = 100;
   for (int i = 0; i<max; i++)
   {
       int x = i * 10000;
       myvecB.push_back(x);
       cout << "Pushing: " << x << ", size: " << myvecB.size() << ", capacity: " << myvecB.capacity() << endl;
   }

   return 0;
}

Explanation / Answer

#include #include #include using namespace std; class Vector { public: //Constructors Vector(std::initializer_list); //constructor with {x, y, z} init (ie Vector v({1, 2, 3}); ) Vector(int); Vector(); Vector(const Vector& a); Vector(); //Overloaded operators int& operator[](int) const; //function type: int& because returns a[i] (or &a[i]) const Vector& operator++(); const Vector& operator--(); const bool operator==(Vector&) const; Vector& operator=(const Vector&); //COPY ASSIGNMENT - rule of 3 Vector& operator+=(const Vector&); //a Vector, += a vector (since its IN the vector class) const Vector operator+(const Vector&); //adds values of two equal sized vectors const Vector& operator+(int); //deals with adding a single int (essentially .pushBack(int)) //Input functions const Vector& pushBack(int); //add single element to end void addToEnd(std::initializer_list); //add list to end Vector softRest() const; const Vector& hardRest(); //Output functions int size() const; void arr_print() const; private: int sz; int* elem; }; #include #include #include #include #include #include #include #include #include class not_isalpha { bool table[UCHAR_MAX]; public: not_isalpha() { for (int i=0; i

Related Questions

Navigate

• Browse (All)
• Browse H
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.