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  1. #include <iostream>
  2.  
  3. using namespace std;
  4.  
  5. int main()
  6. {
  7. 	//Pointers and Addresses
  8.     int num = 100;
  9.     int *ptr;
  10.     ptr = &num; //ptr is set to the address of num
  11.  
  12.     cout << ptr << endl; 
  13.     cout << *ptr << endl << endl; // Dereferencing
  14.     cout << &num << endl; 
  15.     cout << num << endl << endl;
  16.  
  17.     //Dynamic Variables
  18.     int *ptr2;
  19.     int num2 = 50;
  20.     ptr2 = new int;
  21.     *ptr2 = num2; // Dereference and set it equal to the value of num 2
  22.     cout << num2 << endl;
  23.     cout << *ptr2 << endl << endl; // Dereferencing
  24.  
  25.     // Dynamic Array
  26.     int *array;
  27.     array = new int[4];
  28.     for(int i = 0; i < 4; i++)
  29.     {
  30.         cout << "Put in integers: ";
  31.         cin >> array[i];
  32.     }
  33.     for(int i = 0; i < 4; i++)
  34.     {
  35.         if(i==3)
  36.             cout << array[i] << endl;
  37.         else
  38.             cout << array[i] << ", ";
  39.     }
  40.  
  41.     delete ptr2;
  42.     delete []array;
  43.  
  44.     return 0;
  45. }
Success #stdin #stdout 0s 5264KB
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stdin
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Standard input is empty
stdout
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0x7fff7e255cf4
100

0x7fff7e255cf4
100

50
50

Put in integers: Put in integers: Put in integers: Put in integers: 0, 0, 0, 0
https://ideone.com/WjsTfW
language:
C++ (gcc 8.3)
created:
277 days ago
visibility:
public

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