need help with c++ program

[froxy]

I need some help with a c++ program for my class, i can't figure out whats going on.

Input: from the user

Output: standard output AND file named "program3.txt"

Write a program that will calculate both roots of a quadratic equation. The program should ask the user to input a, b, and c and then write both roots to standard output (the screen) and a file named "program3.txt".

Your program should print the roots ordered from least to greatest.


If the quadratic equation has a negative discriminant your program should output "NO REAL ROOTS".


If the two roots are the same only report one root.


ax2 + bx + c = 0

Formula

Sample Input 	Sample Output
1, -3, -10 	-2, 5
3, 6, 3 	-1
2, -2, -12 	-2, 3
3, -2, 20 	NO REAL ROOTS

Here is so far what ive got

#include <iostream>
#include <cmath>

using namespace std;

int main()
{
    double a, b, c, d;
    double root1, root2, temp;
    
    //output
    
    cout << "enter a, b, c";
    cin >> a >> b >> c;
    
    //process
    
    d = pow(b,2) - 4 * a * c;
    if(d >= 0)
    {
          root1 = (-b + sqrt(d))/(2 * a);
          }
          if(d > 0)
          {
                 root2 = (-b + sqrt(d))/(2*a);
                 }
                                  if(root1 > root2)
                 {
                                temp = root1;
                                root1 = root2;
                                root2 = temp;
                                }

                                
                                // output
                                
                                if(d >= 0)
                                {
                                        cout << root1 << " ";
                                        }
                                        if(d > 0)
                                        {
                                               cout << root2 << " " <<endl;
                                        }
                                        if(d < 0)
                                        {
                                               cout <<"No Real Roots" << " ";
                                               }
                                               cin.get();
                                               cin.get();
                                               return 0;
                                               }

Can someone help me out with the sample output. i get the 2nd integer, but i dont get the first.

[Rich2189]

I need some help with a c++ program for my class, i can't figure out whats going on.

Sample Input 	Sample Output
1, -3, -10 	-2, 5
3, 6, 3 	-1
2, -2, -12 	-2, 3
3, -2, 20 	NO REAL ROOTS

Here is so far what ive got

#include <iostream>
#include <cmath>

using namespace std;

int main()
{
    double a, b, c, d;
    double root1, root2, temp;
    
    //output
    
    cout << "enter a, b, c";
    cin >> a >> b >> c;
    
    //process
    
    d = pow(b,2) - 4 * a * c;
    if(d >= 0)
    {
          root1 = (-b + sqrt(d))/(2 * a);
          }
          if(d > 0)
          {
                 root2 = (-b + sqrt(d))/(2*a);
                 }
                                  if(root1 > root2)
                 {
                                temp = root1;
                                root1 = root2;
                                root2 = temp;
                                }

                                
                                // output
                                
                                if(d >= 0)
                                {
                                        cout << root1 << " ";
                                        }
                                        if(d > 0)
                                        {
                                               cout << root2 << " " <<endl;
                                        }
                                        if(d < 0)
                                        {
                                               cout <<"No Real Roots" << " ";
                                               }
                                               cin.get();
                                               cin.get();
                                               return 0;
                                               }

Can someone help me out with the sample output. i get the 2nd integer, but i dont get the first.

Since this is homework I will only provide hints.

This line:

 root2 = (-b + sqrt(d))/(2*a);

Contains a maths error, or the line above does depending on the way you look at it.

Also initialize all your variables with a value, you can not assume they have a consistent default value.

And lastly your indentation is terrible.