#include<iostream.h>
#include<iomanip.h>

double F( double a, double delta);

void main()

{
	double parameter;
	double elongation;
	double force;
	int k;


	cout << setiosflags(ios::fixed) << setprecision(4);

	// First table creation 

	cout <<"\n\n              First Table \n    for fixed parameter at 1 mm \n\n";
	cout <<"       elongation       force \n\n";

	parameter = 1;

	for( k=0; k <=10; k++)
	{
		elongation = k * 0.4;
		force = F( parameter, elongation);
		cout << setw(15) << elongation << setw(15) <<force << endl;
	}

	cout <<"\n\n enter a character for more....";
	char hold;
	cin >> hold;

    	// second table creation 

	cout <<"\n\n             Second Table \n    for fixed elongation at 2.5 mm \n\n";
	cout <<"       parameter       force \n\n";

	elongation = 2.5;

	for( k=0; k <=10; k++)
	{
		parameter = k * 0.4;
		force = F( parameter, elongation);
		cout << setw(15) << parameter << setw(15) <<force << endl;
	}
 
cout<<"\n\n   Enter e to terminate   ";
cin >> hold;

}

// Definition of the function

double F( double a, double delta)
{
	double result;

	if( a < 0.0 || delta < 0.0 )
		result = 0.0;

	else if ( delta <= a)
		result = 15 * delta / a;

	else if ( delta <= 2.5 * a)
		result = 15 + (24 - 15)/ (1.5 * a) * (delta - a);

	else
		result = 24;


	return(result);
}