Function change_it_by_pointer

Examples/Modules/Chapter 08/Ex8_07.cpp:18–21

}

void change_it_by_pointer(double* pit)
{
  *pit += 10.0;       // This modifies the original double
}
void change_it_by_reference(double& pit)
{
  pit += 10.0;        // This modifies the original double as well!