structure help

[atown282]

/*

Can someone just help me get started with this, and show me how to go in the right direction. Here are my instructions
Use a struct to store all of the data associated with each quadratic equation.
Thus the structure should have fields to store a, b, and c. It should also store the numbers associated with the answer(s),
namely the discriminant, the number of solutions, x1 and x2.
(Of course, in some cases only x1 contains a solutions and in other cases there are no solutions,
but that can be discerned from the number of solutions.)
Since when you first initialize the structure with values for a, b, and c the fields for the results contain garbage data,
also add a Boolean field AnswersValid. Initially this should be false, but after you plug in the various answers change it to true.
You might not really need this Boolean field in this assignment,
but it makes your structure more useful to others if they choose to incorporate it into other projects.
You will have to change your parameter passing as you will want to pass this structure instead of individual numbers in some case(s).

You should create your own .h header file containing the following:
#include <iostream>
#include <cmath> // Needed for the sqrt function.
using namespace std;
Plus the definition of your struct type and your function prototypes.

In your .cpp file you will have main and your other functions coded.
*/

#include <iostream>
#include <cmath>    

using namespace std;

inline void normalize(float & a,float & b,float & c);
void solution(float a, float b, float c, int & NumSolutions, float & x1, float & x2);
void input(float & a, float & b, float & c);
inline float Discriminant(float a, float b, float c);
void PrintSolutions(int NumSolutions, float x1, float x2);

int main(void) 
{
   char Reply;
   float a, b, c, x1, x2;
   int NumSolutions;

   do 
      {
      cout << "Quadratic Equation Solver" << endl << endl;
      input(a, b, c);
      solution(a, b, c, NumSolutions, x1, x2);  
      PrintSolutions(NumSolutions, x1, x2);
      cout << "Solve another (y/n)? ";
      cin >> Reply;
	  }
   while (Reply == 'y');
}

void input(float & a, float & b, float & c)
{
      cout << "Enter the value of coefficient a: ";
      cin >> a;
      cout << "Enter the value of coefficient b: ";
      cin >> b;
      cout << "Enter the value of coefficient c: ";
      cin >> c;
}


void normalize(float & a, float & b, float & c)
{
	float Largest;

      if (fabs(a) > fabs(b))
         Largest = fabs(a);
      else
         Largest = fabs(b);
      
      if (fabs(c) > Largest)
         Largest = fabs(c);

      a = a / Largest;
      b = b / Largest;
      c = c / Largest;
}


float Discriminant(float a, float b, float c)
{
   return pow(b, 2) - 4.0f * a * c;
}

void solution(float a, float b, float c, int & NumSolutions, float & x1, float & x2)
{
	float discrim, Root;

	normalize(a, b, c);
	discrim = Discriminant(a, b, c);
	
    if (discrim < 0)
	   NumSolutions = 0;
    else if (discrim == 0)
       {
       x1 = -b / (2.0f * a);
	   NumSolutions = 1;
       }
    else   // Discriminant must be positive
	   {
       Root = sqrt(discrim);
       NumSolutions = 2;
     
	   if (-b > 0)
          x1 = (-b + Root) / (2.0f * a);
       else
          x1 = (-b- Root) / (2.0f * a);
            
       x2 = c / (a * x1);
       }

}


void PrintSolutions(int NumSolutions, float x1, float x2)
{
	if (NumSolutions == 0)
       cout << "No real solutions" << endl;
	else if (NumSolutions == 1)
	   cout << "One real solution: " << "x1:" << x1 << endl;
	else
	   cout << "Two real solutions: " << "x1:" << x1 << " and " << "x2:" << x2 << endl;
}

[atown282]

i just need to make a header file which I have started but I'm not having success with

[atown282]

here is my .h code. but when i place it into my .cpp file it is telling me there is no such file.

#include <iostream>
#include <cmath> // Needed for the sqrt function.
using namespace std;
//Plus the definition of your struct type and your function prototypes.

typedef struct
{
	float a,b,c;

}coe;