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