A function can have default parameters

NOTE : -

THIS CONTENT IS NOT ORIGINAL

12. A function can have default parameters

It is possible to define default parameters for functions:

using namespace std;
#include 

double test (double a, double b = 7)
{
  return a - b;
}

int main ()
{
  cout << test (14, 5) << endl;    // Displays 14 - 5
  cout << test (14) << endl;       // Displays 14 - 7

  return 0;
}

Output

9 7

BIBILOGRAPHY / REFERENCE : - http://www.4p8.com/eric.brasseur/cppcen.html