syntax problem

#include <stdio.h>
#include <iostream.h>
#include <stdlib.h>
#include <windows.h>

String information()
{
       String sName;
       cout << "Enter your name";
       cin >> sName;

       return sName;
}

int main(int nNumberofArgs, char* pszArgs[])
{

    double dAccumulator;
        do
             {
             cout << "Enter a digit to be added to the accumulator, if you get the accumulator to zero the program will exit";
             double dInput;
             cin >> dInput;

             String sInfo;
             dAccumulator = dAccumulator + dInput;
             sInfo = information();
             cout << sInfo;
             cout << "'s accumulator is now ";
             cout << dAccumulator;
             }
         while (dAccumulator != 0);

    system("PAUSE");
    return 0;
}

#include <cstdio>
#include <iostream>
#include <cstdlib>
#include <string>
using namespace std;


string information();

int main()
{

    double dAccumulator = 0;
        do
             {
             cout << "\nEnter a digit to be added to the accumulator, if you get the accumulator to zero the program will exit: ";
             double dInput;
             cin >> dInput;

             string sInfo;
             dAccumulator = dAccumulator + dInput;
             sInfo = information();
             cout << sInfo<<endl;
             cout << "'s accumulator is now ";
             cout << dAccumulator;
             }
         while (dAccumulator != 0);

    system("PAUSE");
    return 0;
}

string information()
{
       string sName;
       cout << "\nEnter your name: ";
       cin >> sName;

       return sName;
}