#include<iostream.h>
#include<conio.h>
int main()
{
int a, b, c, sum;
int add( int, int, int );
clrscr();
cout<<"Enter three numbers : ";
cin>>a>>b>>c;
sum = add ( a, b, c ) ;
cout<<endl<<"Sum = "<<sum;
getch();
return 0;
}
int add (int x, int y, int z)
{
int s;
s = x + y + z;
return(s);
}