Programme that stops at entering -999 and print sum.

//This programme is tested on visual studio 2012//
#include <iostream>

using namespace std;

void main()

{

float a,sum=0;
cout<<"------------------------------------------------------------------------------\n";
cout<<"This programme will input numbers and print their sum on entering-999\n";
cout<<"------------------------------------------------------------------------------\n";

cout<<"Enter no = ";

cin>>a;

for (int i=0;i<2;i++)

{

    cout<<"Enter no = ";

cin>>a;

if(a==-999)

{

    cout<<"\nThe sum of the numbers entered except -999 = "<<sum;

    break;

}

    sum=sum+a;

        i=0;

}
cout<<"\n\n------------------------------------------------------------------------------\n";
    cout<<"Thank You for using.\n\nVisit http://bilalzahid22.blogspot.com/ for more\n";
  cout<<"\n------------------------------------------------------------------------------\n";

}