What is pointing program?

Answer 1

// Pointing

// Demonstrates using pointers

#include

<iostream>

#include

<string>

using

namespace std;

int

main()

{

int* pAPointer; //declare a pointer

int* pScore = 0; //declare and initialize a pointer

int score = 1000;

pScore = &score;

//assign pointer pScore address of variable score

cout <<

"Assigning &score to pScore\n";

cout <<

"&score is: " << &score << "\n"; //address of score variable

cout <<

"pScore is: " << pScore << "\n"; //address stored in pointer

cout <<

"score is: " << score << "\n";

cout <<

"*pScore is: " << *pScore << "\n\n"; //value pointed to by pointer

cout <<

"Adding 500 to score\n";

score += 500;

cout <<

"score is: " << score << "\n";

cout <<

"*pScore is: " << *pScore << "\n\n";

cout <<

"Adding 500 to *pScore\n";

*pScore += 500;

cout <<

"score is: " << score << "\n";

cout <<

"*pScore is: " << *pScore << "\n\n";

cout <<

"Assigning &newScore to pScore\n";

int newScore = 5000;

pScore = &newScore;

cout <<

"&newScore is: " << &newScore << "\n";

cout <<

"pScore is: " << pScore << "\n";

cout <<

"newScore is: " << newScore << "\n";

cout <<

"*pScore is: " << *pScore << "\n\n";

cout <<

"Assigning &str to pStr\n";

string str = "score";

string* pStr = &str; //pointer to string object

cout <<

"str is: " << str << "\n";

cout <<

"*pStr is: " << *pStr << "\n";

cout <<

"(*pStr).size() is: " << (*pStr).size() << "\n";

cout <<

"pStr->size() is: " << pStr->size() << "\n";

return 0;

}