#include <stdio.h>

double change( int tot );
double twenties;
double tenners;
double fivers;
double poundcoins;


void main()
{
 int splitchange;
 int totalmoney = 20;
   splitchange = change ();

   printf("£20 consists of %d \n", splitchange );
   printf("number of twenties %d \n", twenties);
}

double change ( int tot)
{
  double answer;

  if ((tot % 20) == 0)
{
  twenties = tot/20;
}

  if (tot % 10 ==0)
{
  tenners = (tot-(tot % 20))/10;

 }

   if (tot % 5 ==0)
{
  fivers = (tot-(tot % 20)-(tot % 10))/5;
	    }

   if (tot % 10 ==0)
{
  poundcoins = (tot-(tot % 20)-(tot % 10)-(tot % 5))/1;

 }
return( answer );

}