Thread: pointers

I decided to to read some of the tutorials again to clarify stuff I missed and such.

Code:

#include <iostream>

using namespace std;

int main()
{ 
  int x;            // A normal integer
  int *p;           // A pointer to an integer

  p = &x;           // Read it, "assign the address of x to p"
  cin>> x;          // Put a value in x, we could also use *p here
  cin.ignore();
  cout<< *p <<"\n"; // Note the use of the * to get the value
  cin.get();
}

Alright how I understand this is p is a pointer due to the *. p points to the address of x because of the &. So becuase p points to x it should display the value of x?

yes. Hopefully this will show it a little better:

Code:

#include <iostream>

using std::cin;
using std::cout;
using std::endl;

int main() {

	int x;
	int* p;

	p = &x;

	cout << "Enter a value for x: ";
	cin >> x;
	cin.ignore();

	cout.setf(std::ios_base::hex);
	cout << "Address of x: " << &x << endl;
	cout << "value of p: " << p << endl;

	cout.setf(std::ios_base::dec);
	cout << "Value of x: " << x << endl;
	cout << "Value that p points to: " << *p << endl;

	cin.get();
	return 0;
}

Alright thanks for explaining it.

I didn't want to make a new post just for this, so how many of the tutorials do you think I should read before I start working again? I just read the one about arrays and its starting to get confusing.

Yet another victory for me!

Code:

#include <cstdlib>
#include <iostream>

using namespace std;

int main(int argc, char *argv[])
{
    int number = rand()%30;
    int 
    guess=-1;
    int trycount=0;
    
    while(guess != number && trycount < 8)
    {
    cout<<"Please enter you guess:";
    cin>>guess;
    if (guess<number)
    cout<<"too low"<<endl;
    if (guess>number)
    
    cout<<"too high"<<endl;
    trycount++;
    }
    if (guess==number)
    cout<<"you go it!";
    else
    cout<<"Looks like you guessed wrong. The number was:"<<number;
    cin.ignore();
    cin.get();
    }

This is the guessing game challenge someone directed me to. I changed a few things and peeked on the else, but otherwise I got it.