A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing


  • 4 years ago

I was asked to write a program that finds the solutions, if any, to a given quadratic equation. My code is below. I have two issues: First When i input for example, a=3, b=4, c=5 the result prints" The roots are -nan and -nan" Secondly, I am to ensure that division by 0 is not permitted and the discriminant b^2-4ac cannot be negative. I am having a hard time with this bit. Could you help me solve this part?

  • This Question is Closed
  1. anonymous
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    HERE IS MY CODE: #include <iostream> #include <cmath> using namespace std; int main(){ /* Here I have initialized some variables a,b and c that you would see in a standard quadratic equation. positive_root and negative_root are the roots you get when using the quadratic formula to solve a quadratic equation given the values of a,b and c */ double a, b, c, positive_root, negative_root; cout<<" enter value of a,b and c : "<<endl; cin>>a>>b>>c; // using the functions sqrt() and pow(), we positive_root= (-b + sqrt(( pow(b,2)- 4*a*c)))/ 2*a ; negative_root= (-b - sqrt(( pow(b,2)- 4*a*c)))/ 2*a ; cout << " The roots are:"<<positive_root<< " and "<< negative_root<<endl; return 0; }

  2. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...


  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.