Dereferencing Example

 int  main()  {
     int  i  =  42;
     int  *p  =  &i;
     std::cout  <<  i  <<  '  '  <<  *p  <<  endl;
     (*p)++;
     std::cout  <<  i  <<  '  '  <<  *p  <<  endl;
 }
Outputs:
     42  42
     43  43