#include <iostream.h>
#include <math.h> /* You need this to use the fmod dunction */

int main()
{
double amt,amt_over;
double field_val10k,field_val1k,field_valhun,field_val10,field_val1,field_valcent;

cout << "Enter amount to be paid:"<<endl;
cin >> amt;

/*Work out the Ten thousands field */
amt_over=fmod(amt,10000);
field_val10k=(amt-amt_over)/10000;

/*Work out the thousands field */
amt_over=fmod(amt,1000);
field_val1k=((amt-amt_over)/1000)-(field_val10k*10);

/*Work out the hundreds field */
amt_over=fmod(amt,100);
field_valhun=((amt-amt_over)/100)-((field_val10k*100)+(field_val1k*10));

/*Work out the tens field */
amt_over=fmod(amt,10);
field_val10=((amt-amt_over)/10)-((field_val10k*1000)+(field_val1k*100)+(field_valhun*10));

/*Work out the single unit field */
amt_over=fmod(amt,1);
field_val1=(amt-amt_over)-((field_val10k*10000)+(field_val1k*1000)+(field_valhun*100)+(field_val10*10));

/*Cent field is the easiest!!*/
field_valcent=(fmod(amt,1)*100);


cout << "#######################################"<<endl;
cout << "Ten thousands:\t" <<field_val10k<<endl;
cout << "Thousands:\t" <<field_val1k<<endl;
cout << "Hundreds:\t" <<field_valhun<<endl;
cout << "Tens:\t\t" <<field_val10<<endl;
cout << "Ones:\t\t" <<field_val1<<endl;
cout << "Cents:\t\t"<<field_valcent<<endl;
cout << "#######################################"<<endl;


return 0;
}

>however would this way return something like '4.5678?'
No, integers can't hold a precision, so everything past the radix is truncated. You would have 4. But you would also have known this if you had bothered to try it before asking this question.

#include<iostream>
#include<iomanip>
#include<string>


using namespace std;

int main()
{

string name;
double amount;
string prompt;
prompt = "Input payee name here like: ";
cout << prompt;
cin >> name;
cin.get();

prompt = "Input amount payable: ";
cout << prompt;
cin >> amount;
cin.get();

int ten_thousand;
int thousand;
int hundread;
int euro;
double cent;

cout << endl;
cout << endl;



// THE CHEQUE
cout << "*******************************************";
cout << endl << "\t"<< setw(20) << "MODCON" << endl;

cout << "Promises to pay " << "\t" << name << setw(20) << "EUR" << amount <<endl;

//Calculate amount of thousands.
int thousand = (int) (amount / 1000);
cout << "Thousands " << setw(20) << thousand;

cout << endl << "**********************************************";



cin.get();

return 0;
}

e.g.... lets say the amount is 35857.56

ten_thousand = (int) (amount / 10000);
ten_thousand comes up as 3.

thousand = (int) (amount / 1000) - (ten_thousand * 10);
thousand comes up as 5