What is inventory pointer c?

Answer 1

// Inventory Pointer

// Demonstrates returning a pointer

#include

<iostream>

#include

<string>

#include

<vector>

using

namespace std;

//returns a pointer to a string element

string

* ptrToElement(vector<string>* const pVec, int i);

int

main()

{

vector<string> inventory;

inventory.push_back(

"sword");

inventory.push_back(

"armor");

inventory.push_back(

"shield");

//displays string object that the returned pointer points to

cout <<

"Sending the objected pointed to by returned pointer:\n";

cout << *(ptrToElement(&inventory, 0)) <<

"\n\n";

//assigns one pointer to another - inexpensive assignment

cout <<

"Assigning the returned pointer to another pointer.\n";

string* pStr = ptrToElement(&inventory, 1);

cout <<

"Sending the object pointed to by new pointer to cout:\n";

cout << *pStr <<

"\n\n";

//copies a string object - expensive assignment

cout <<

"Assigning object pointed by pointer to a string object.\n";

string str = *(ptrToElement(&inventory, 2));

cout <<

"Sending the new string object to cout:\n";

cout << str <<

"\n\n";

//altering the string object through a returned pointer

cout <<

"Altering an object through a returned pointer.\n";

*pStr =

"Healing Potion";

cout <<

"Sending the altered object to cout:\n";

cout << inventory[1] << endl;

return 0;

}

string

* ptrToElement(vector<string>* const pVec, int i)

{

//returns address of the string in position i of vector that pVec points to

return &((*pVec)[i]);

}