1
sub Sum(x as integer,y as integer)


end sub


2
sub  Sum(x as integer)


end sub


3

sub Sum (x as integer ,y as string)


end sub


عند الأستدعاء 
ٍSum(5)
هذا ينادي 2


Sum (5,6)

هذا ينادي 1

Sum (5,"6")
هذا ينادي 3

Matrix x,y;
// after the intialization of both variables
x+=y;

const Matrix& operator+=(const Matrix& m)
{
   //here implement the multiplication operation
   //  *this = *this * m

  //at the end return the same object
  return *this;
}

z = x + y
z = x * y

 friend
const Matrix& operator + (const Matrix& m1 , const Matrix& m2 )
{
      // the matrix that contians the result
      Matrix m;
///////////////////////////////////////////////////////
/////// here set m to be eqivalent to m1+m2
///////////////////////////////////////////////////////
 return  m;

}

int x,y,z
 y = x + z

+    -    *    /    =    <    >    +=   -=   *=   /=   <<   >>
 <<=  >>=  ==   !=   <=   >=   ++   --   %    &    ^    !    |
 ~    &=   ^=   |=   &&   ||   %=   []   ()   new  delete

// vectors: overloading operators example
 #include <iostream.h>
 
 class CVector {
   public:
     int x,y;
     CVector () {};
     CVector (int,int);
     CVector operator + (CVector);
 };
 
 CVector::CVector (int a, int b) {
   x = a;
   y = b;
 }
 
 CVector CVector::operator+ (CVector param) {
   CVector temp;
   temp.x = x + param.x;
   temp.y = y + param.y;
   return (temp);
 }
 
 int main () {
   CVector a (3,1);
   CVector b (1,2);
   CVector c;
   c = a + b;
   cout << c.x << "," << c.y;
   return 0;
 }

OutPut:::: 4,3