quadratic equation in c++

Determine the roots of the quadratic equation

ax2 + bx + c = 0

using the formula of quadratic equation

PROGRAM:

#include <iostream.h>

#include <conio.h>

#include <math.h>

#include <stdlib.h>

void main() {

clrscr();

double a,b,c,d;

cout<<"Enter the values of A, B and C for the given quadratic equation";

cout<<"\nEnter value A: ";

cin>>a;

cout<<"\nEnter value B: ";

cin>>b;

cout<<"\nEnter value C: ";

cin>>c;

if(sqrt(pow(b,2)-(4*a*c)<0)) {

cout<<"\ndeterminant is less than 0, \nroots of the quadratic equation cannot be found";

getch();

exit(0);

}

d=sqrt(pow(b,2)-(4*a*c));

cout<<"\nThe roots of the quadratic equation are: \n";

cout<<"\nRoot 1: "<<-b+d/(2*a);

cout<<"\nRoot 2: "<<-b-d/(2*a);

getch();

}//end of the program