Below is the code which is supposed to round to two decimal places, i.e. 1.2874 is suppose to round to 1.29, but rather gives me 128.0000. What am I doing wrong need help fast!

#include <iomanip>
#include <iostream>
#include <cmath>
using namespace std;

double roundIt(double x, double n)
{
x = floor( x * pow(10.0, n) + 0.5 / pow(10.0, n));
return x;
}


int main()
{
float x;

cout << setprecision(4) << fixed << showpoint;
cout << "Enter number a positive number with a fractional part" << endl;
cout << "more than 2 decimal places, i.e. 1.2574, to be" << endl;
cout << "rounded to two deciaml places." << endl;
cin >> x;

cout << "The rounded answer for: " << x << "is: " << roundIt(x, 2)<< endl;


cout << "\n\n\n\n";
cout << "Jordan McGehee " << endl;
cout << "Due 03-03-08 " << endl;



system ("pause");


return 0;
}//end main