A programe to find the roots of quadratic equation

Description:

This program take three constants of quadratic equation as input and find real and imaginary roots of that quadratic equation automatically.

Code:


#include<iostream>
#include<conio.h>
#include<iomanip>
#include<math.h>
using namespace std;
int main()
{
    float a,b,c,d,f,e,g,h,i,j,k,l;
    cout<<"A programe to find the roots of quadratic equation"<<endl;
    xy:
    cout<<"Enter the values of a,b,c"<<endl;
    cout<<"Enter value of a"<<endl;
    cin>>a;
    cout<<endl<<"Enter the value of b"<<endl;
    cin>>b;
    cout<<endl<<"Enter the value of c"<<endl;
    cin>>c;
    cout<<endl;
    d=b*b-(4*a*c);
    if(d>0||d==0)
    {
      f=(-b+sqrt(d))/(2*a);
      e=(-b-sqrt(d))/(2*a);
      cout<<"The required roots are"<<endl<<"The first root is ="<<f<<endl<<"The second root is ="<<e<<endl;
      }
    if(d<0)
    {
      g=-b/(2*a);//x1
      h= sqrt(-d)/(2*a);//x1
      j=-sqrt(-d)/(2*a);//x2
      k=g+h;
      l=g+j;
      cout<<"the required roots are"<<endl;
      cout<<"first root="<<k<<"i"<<endl;
      cout<<"second root="<<l<<"i"<<endl;
      }
      goto xy;
      getche();
      return 0;
      }

Output: