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Full Discussion: getting double to be converted
Top Forums Programming getting double to be converted Post 302315510 by xiaojesus on Tuesday 12th of May 2009 02:02:58 PM
Old 05-12-2009
getting double to be converted
got a problem.
i have to get A to + 20.70
but i keep getting A + 20 in my logic below.
anyone can guide me on where i go wrong?
i understand it is a double, but i do not noe how to parse it to the function so that it can read in as 20.70 instead of just 20..

i highlighted the problem part in red.. please advices

Code:
#include <iostream>
#include <string>
#include <stdlib.h>
#include <string.h>

using namespace std;
class Account
{
      
    //declaration of friend functions
    friend ostream& operator<<(ostream&,const Account&);
    friend istream& operator>>(istream&,Account&);
    friend Account operator +(const Account&,int);
    //friend Account Account::operator+(double r)
    //friend Account operator +(int,const Account&);
    //declaration of public members
    public :
      
        Account();
        Account(int a1,int b1);
        Account operator +(const Account&)const;
  
        
    //declaration of private members    
    private:
            
        int a,b;
};
//constructor for matrix class
Account::Account()
{
    a=0;
    b=0;
                  
}
Account::Account(int a1,int b1)
{
    a=a1;
    b=b1;
           
}
//overloading stream extraction operator
ostream& operator << (ostream &out,const Account &ac)
{
    //out <<  ac.a  << "." << ac.b  << endl;
    out <<  ac.a  << "."<<ac.b  << endl;
    
    
    return out;
    
}//end of function
//overloading stream insertion operator
istream& operator >>(istream &in,Account &ac)
{
    string a,b,s;
    fflush(stdin);
    getline(in,s);
   
 
    a = s.substr(0);
    b = s.substr(0);
    ac.a = atoi(a.c_str());
    
    string::size_type nDecimalPosition = s.find('.');
    if (nDecimalPosition != string::npos)
    ac.b = atoi(s.c_str() + nDecimalPosition + 1);
   
      return in;  
}
 
Account operator +(const Account &rhs,int i)
{
    Account temp;
    //temp.a = rhs.a+i;
    //temp.b = rhs.b+i;
    
    double temprhs = (double)rhs.a + (double)rhs.b / 100;
    double result = 0.0;
    cout << "temprhs " << temprhs << endl;
   
    cout << "i " << i << endl;
    result=temprhs+i;
  
    temp.a = (int)result;
    temp.b = (int)((result - (int)result) * 100);
    
    return temp;
    
    }//end of function 
int main()
{
Account A, B, C;
cout << "Enter first account balance, format xx.yy: ";
cin >> A;
cout << "Enter second account balance, format xx.yy: ";
cin >> B;

C = A + 20.70;
cout << "Addition A + 20.70 = " << C << endl;

system("pause");
return 0;
}

 

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LEARN ABOUT OSF1

dxaccounts

dxaccounts(8)						      System Manager's Manual						     dxaccounts(8)

NAME

       dxaccounts - Graphical interface for account administration

SYNOPSIS

       /usr/bin/X11/dxaccounts

DESCRIPTION

       The  Account  Manager  application, dxaccounts, helps you manage user accounts on your Tru64 UNIX system. It operates on both base security
       level systems and enhanced security (C2) level systems.

       The Account Manager application lets you manage both the local and Network Information Service (NIS) UNIX account databases. NIS is used in
       order  to  centrally  manage  user accounts in a network environment. NIS lets participating systems share a common set of passwd and group
       files. NIS uses a client-server model.

       When the Advanced Server for Tru64 UNIX product is installed, the Account Manager application allows you to  perform  domain  user  account
       management for PC users.

       To  start  Account  Manager  from  the CDE desktop:Choose the Application Manager from the CDE front panel.  Choose the System_Admin group.
       Choose the DailyAdmin group.  Click on the Account Manager icon.

       Online help is available for the dxaccounts application. To get help, click on any Help button or use the Help pull-down menu.

       Account Manager replaces the XSysAdmin(8) and XIsso(8) applications.

RESTRICTIONS

       You must have root privileges to modify system files with this application. If dxaccounts is run without root permission, you may view  but
       not modify account information.

       In order to make changes to the NIS databases, you must run Account Manager on the machine designated as the NIS server.

FILES

       Defaults  that  are  shared  by	the  graphical user and command-line interfaces System and account defaults (enhanced security only) Group
       information for local groups Account information for local user accounts List of shells on the system Group information for NIS groups  (on
       an  NIS	master)  Account  information  for NIS user accounts (on an NIS master) Protected password authentication database files (enhanced
       security only) Protected password database (enhanced security only) Protected password database (enhanced security  only)  Account  Manager
       application  Account Manager help volume Account Manager help volume for enhanced security Directory containing Account Manager application
       icons Application defaults file that sets the default values for the X resources Account Manager message catalog Default directory for user
       account initial files

SEE ALSO

       Commands:  auditmask(8),  authck(8),  groupadd(8),  groupdel(8),  groupmod(8),  login(1), nis_intro(7), passwd(1), secsetup(8), useradd(8),
       userdel(8), usermod(8), XIsso(8), XSysAdmin(8)

       Functions: acceptable_password(3), getprpwent(3), getpwent(3)

       Files: authcap(4), default(4), group(4), passwd(4)

       Manuals: System Administration, Advanced Server for UNIX Installation and Administration, Advanced  Server  for	UNIX  Concepts	and  Plan-
       ning</docbook>

																     dxaccounts(8)
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