#include <stdio.h>
int main(int argc, const char *argv[])
{
    // Define a pointer
    int* p;
    // We make p point to another variables value:
    int a = 2;
    // Initializing the pointer
    p = &a;
    
    // Print value our pointer points to
    printf("Value of p: %d\n", *p);
    // Print the pointers Memmory adress
    printf("Adress of p: %p\n", p);
    
    
    // Access the value of p
    *p = 42;
    // The value of a is changed
    // p points to the memory a is stored in
    printf("Value of a: %d\n", a);
    printf("Value of p: %d\n", *p);

    a = 27;
    // You can also change the value of a
    // and the value of p will change
    printf("Value of a: %d\n", a);
    printf("Value of p: %d\n", *p);
}