C++ Program to Find the Roots of a Quadratic Equation

         #include <iostream.h>
   #include <conio.h>
   #include <math.h>
   int main()
   {
     clrscr();
     float a,b,c,d,root1,root2;
     cout << "Enter the 3 coefficients a, b, c : " << endl;
     cin>>a>>b>>c;
     if(!a)
     {
       if(!b)
         cout << "Both a and b cannot be 0 in ax^2 + bx + c = 0" << "\n";
       else
       {
         d=-c/b;
         cout << "The solution of the linear equation is : " << d << endl;
       }
     }
     else
     {
       d=b*b-4*a*c;
       if(d>0)
       root1=(-b+sqrt(d))/(2*a);
       root2=(-b-sqrt(d))/(2*a);
       cout << "The first root = " << root1 << endl;
       cout << "The second root = " << root2 << endl;
     }
     getch();
     return 0;
   }