PROGRAM 3 BY Ashutosh Dubey

#include
#include
void swap(int,int);
void main()
{
clrscr();
int a,b;
a=10;
b=20;
cout<<"Values before swap"< cout<<"a="< cout<<"b="< swap(a,b);
cout<<"Values after swap"< cout<<"a="< cout<<"b="< getch();
}
void swap(int a, int b)
{
int t;
t=a;
a=b;
b=t;
}