My quadratic equation program won't execute

[beta5554413037]

So, for the exercise where you write a program that solves the quadratic equation, my program won’t execute. I know the code has no bugs because I copied it into another coding website that runs C++ and it worked fine, so I’m not sure why it won’t work here. Here’s the code:

#include
#include

int main() {

double a, b, c;

std::cout << “Enter a: \n”;
std::cin >> a;

std::cout << “Enter b: \n”;
std::cin >> b;

std::cout << “Enter c: \n”;
std::cin >> c;

double root1, root2;

root1 = (-b + std::sqrt(bb - 4ac)) / (2a);

root2 = (-b - std::sqrt(bb - 4ac)) / (2a);

std::cout << "root 1 = " << root1 << " and root 2 = " << root2 << “\n”;

return 0;

}

It lets me compile the program, but when I try to execute it after it never gives the prompt to enter a value for a. Can anyone help?

[midlindner]

Hello, @beta5554413037. Welcome to the forum!
Your code as you’ve posted it is incomplete:

#include
#include
Also notice how your multiplication * is missing?
root1 = (-b + std::sqrt(b b - 4 a c)) / (2 a);

root2 = (-b - std::sqrt(b b - 4 a c)) / (2 a);

The reason is that it isn’t properly formatted for a post in the forum. Any time you need to post code please follow these instructions:

On another topic

THANK YOU @patrickd314 for this!!

Code that is posted without the indentations, whitespace and special characters preserved, is very difficult to read, and cannot easily be tested by those trying to help you.

The Codecademy forum provides a quick and easy way to post properly-formatted code. All you need to do is look for the </> icon in the menu bar which appears at the top of the text box while you type.

Press Enter to go to a blank line, click that icon, and you will see this:

Just copy and paste your code directly from the editor into that highlighted portion, and all of the nicely-readable formatting will be preserved! Moreover, it will be in a format that can be directly copied and pasted into an IDE for testing.

The same icon can be used for highlighting small code snippets in-line for clarity.

If you will reply with your code formatted using the </> button, and include a link to the specific exercise you are working on, I’ll see what I can do.

[fight_dragons]

Besides the missing includes, copy and pasting code could cause issues with ascii characters not being recognized especially double quotes. Furthermore just because it was on a coding website doesn’t at all mean that it is correct, efficient or safe.

(bb - 4ac)) / (2a);
That bit of code looks absolutely wrong

[midlindner]

The markup for the forum converts what is between the *'s to itallics, and you don’t see the *'s. They are there.

[midlindner]

@beta5554413037, proper formatting for the forum aside, your code does work when I run it in the Codecademy https://www.codecademy.com/courses/learn-c-plus-plus/projects/cpp-quadratic-formula project. Is it possible that you didn’t click Save prior to compiling?

[beta5554413037]

Sorry about the mistakes with the formatting, I’m new here.

Anyway, that’s what I was forgetting. Thanks!

[midlindner]

No worries. That bit about formatting is more FYI for future posts where the code may be more complex. Happy coding!