OOP Code Example of Call By Reference and Return By Reference

Call by reference

void  swap(int &x, int &y)

{

int temp = x;

x = y;

y = temp;

cout<<x<<”\\”<<y<<endl;

}

int main()

{

int main x = 6;

swap(m,n);

return 0;

}

 

Return by Reference

int val[5] = {1,2,3,4,5};

int &display(int i)

{

return val[i];

}

int main()

{

cout << display(i) <<endl;

return 0;

}