The roots of the quadratic equation ax^{2} + bx + c = 0, a ne 0 are given by the following formula:

In this formula, the term b^{2} - 4ac is called the discriminant. If b^{2} - 4ac = 0,
then the equation has two equal roots. If b^{2} - 4ac > 0, the
equation has two real roots. If b^{2} - 4ac < 0, the equation has two
complex roots. Write a program that prompts the user to input the
value of a (the coefficient of x^{2}), b (the coefficient of x), and c (the
constant term) and outputs the roots of the quadratic equation.

```
#include <stdio.h>
#include <math.h>
int main()
{
float a, b, c, d, root1, root2;
printf("Enter value of a, b and c : ");
scanf("%f%f%f", &a, &b, &c);
d = b * b - 4 * a * c;
if (d == 0)
{
root1 = ( - b) / (2 * a);
root2 = root1;
printf("Roots are real & equal, Root1 = %f, Root2 = %f", root1, root2);
}
else if (d > 0)
{
root1 = - (b + sqrt(d)) / (2 * a);
root2 = - (b - sqrt(d)) / (2 * a);
printf("Roots are real & distinct, Root1 = %f, Root2 = %f", root1, root2);
}
else
{
printf("Roots are imaginary");
}
return 0;
}
```

Enter value of a, b and c : 2 5 -3

Roots are real & distinct, Root1 = -3.000000, Root2 = 0.500000