pointers.c

int main(int argc, const char * argv[])
{

    int x = 0;
    int *pointer_to_x = &x;     // * is used to do declaration (use & to get the address of x in memory)
    *pointer_to_x = 1;          // * is a dereference operator
    //x is now equal to 1
    
    printf("*pointer_to_x points to the value %i\n", *pointer_to_x);
    printf("pointer_to_x is located at the address %p\n\n", pointer_to_x);
    
    printf("x stores the value %i\n", x);
    printf("x is located at the address %p\n\n", &x);
    
    return 0;
}