5. Default argument function
In C++ programming you can provide default values for function parameters. The idea behind default arguments is very simple. If a function is called by arguments those arguments used by function.
e.g:#include<iostream.h>
#include<conio.h>
void display(char='*',int=1);
void main()
{
clrscr();
cout<<"\nNo argument is passed ";
display();
cout<<"\nFirst argument is passed ";
display('#');
cout<<"\nBoth argument is passed ";
display('$',5);
getch();
}
void display(char c,int n)
{
for(int i=0;i<n;++i)
cout<<c<<" ";
}
O/P
No argument is passed Char=* First argument is passed Char=# Both rgument is passed Char=$ Char=$ Char=$ Char=$ Char=$