Let's take the starter code and debug it using onlinegdb.com. Fix the problems with pointers and functions. Follow the instructions:

1. Open the link above in a new browser window.
2. Set the language to C++ in the right hand corner.
3. Copy the code into the onlinegdb code window which is main.cpp
4. Click the blue Debug button in the toolbar at the top and wait for the program to compile.
5. [the program will be compiled with the following command: g++ -g main.cpp]

STARTER CODE:

#include #include using namespace std;

const int X1_INDEX= 1; const int X2_INDEX= 0; const int A_INDEX = 0; const int B_INDEX = 1; const int ROOTS = 2; const int C_INDEX = 3; const int COEFFS = 3;

void GetCoefficients(double a, double b, double c); // Get the coefficients for the Quadratic equation. // @param a, b, c reads the coefficients

static bool SolveQuadratic(double a, double b, double c,double *px1, double *px2); // Solve the quadratic equation represented by a, b, c as coefficients // @param a, b, c are the coefficients // @param px1, px2 are the pointers to the roots // @return true if the roots are real or false when imaginary.

static void DisplayRoots(double x1, double x2, bool isReal); // Display the roots using isReal to determine how to print.

// There are problems with this code. Problems that may cause fatal // errors, but probably not. Open www.opengdb.com in another window // and follow the instructions for debugging this lab. int main() { char retry; do { // Using arrays to store coeffs and solutions. double coeffs[COEFFS], solutions[ROOTS]; double *px1 = &solutions[X1_INDEX]; // Use pointers in SolveQuadratic double *px2 = &solutions[X2_INDEX]; bool isReal = true;

// Read the coefficients GetCoefficients(coeffs[A_INDEX], coeffs[B_INDEX], coeffs[C_INDEX]); // Solve the equation isReal = SolveQuadratic(coeffs[A_INDEX], coeffs[B_INDEX], coeffs[C_INDEX], px1, px2);

// Print the results. DisplayRoots(solutions[X1_INDEX], solutions[X2_INDEX], isReal); cout << "Try again (y or Y): "; cin >> retry; } while (retry == 'Y' || retry == 'y'); return 0; }

// GetCoefficient reads the coefficients // @param a, b, c reads the coefficients void GetCoefficients(double a, double b, double c) { cout << "Enter coefficients a, b and c: "; cin >> a >> b >> c; }

// SolveQuadratic solves the quadratic equation and returns the roots // @param a, b, c are the coefficients // @param px1, px2 are the pointers to the roots // @return true if the roots are real or false when imaginary. bool SolveQuadratic(double a, double b, double c, double* px1, double* px2) { double discriminant = b * b - 4 * a*c;

// Two different roots for this equation if (discriminant > 0) { *px1 = (-b + sqrt(discriminant)) / (2 * a); *px2 = (-b - sqrt(discriminant)) / (2 * a); return true; }

// One root satisfies both else if (discriminant == 0) { *(px1) = (-b + sqrt(discriminant)) / (2 * a); *px2 = *px1; return true; }

// Read part in px1, imaginary part in px2. else { *px1 = -b / (2 * a); *px2 = sqrt(-discriminant) / (2 * a); return false; } }

// // DisplayRoots - display 2 roots using information of real and imaginary. // @param x1 - always contains a root. // @param x2 - only contains a root when different or isReal false. // @param isReal - tells whether roots are real or imaginary. static void DisplayRoots(double x1, double x2, bool isReal) { if (isReal) { if (x1 != x2) { cout << "Roots are real and different." << endl; cout << "x1 = " << x1 << endl; cout << "x2 = " << x2 << endl; }

else if (x1 == x2) { cout << "Roots are real and same." << endl; cout << "x1 = x2 =" << x1 << endl; } } else { cout << "Roots are complex and different." << endl; cout << "x1 = " << x1 << "+" << x2 << "i" << endl; cout << "x2 = " << x1 << "-" << x2 << "i" << endl; }

}

PLEASE FIX THE CODE AND EXPLAIN ALL THE BUGS IN THE CODE