C++ Programme to find Square root

//This programme is tested on visual studio 2012//
#include<iostream>
using namespace std;
int main()
{
int n;
cout<<"------------------------------------------------------------------------------\n";
cout<<"This programme will print Square root of the number\n";
cout<<"------------------------------------------------------------------------------\n";

cout<<"Enter number \n";   //number of which square root is calculated
cin>>n;
for(float i=0;i<n;i=i+0.000001)    //loop for finding square root
{
if(i*i==n)
{
cout<<"Square Root of  "<<n <<" = "<<i;
break;
}
if(i*i>n)
{
cout<<"Square Root of  "<<n <<" = "<<i-0.000001;
break;
}
}
cout<<"\n\n------------------------------------------------------------------------------\n";
cout<<"Thank You for using.\n\nVisit http://bilalzahid22.blogspot.com/ for more\n";
cout<<"\n------------------------------------------------------------------------------\n";
system("pause");
return 0;
}