C program to find the roots of an equation ax2 + bx + c = 0

/* C program to find the roots of an equation ax2 + bx + c = 0. */

#include"stdio.h"

#include"math.h"

void main()

{

float a, b, c, delta, r1, r2, x, i, sr;

printf("Enter a:");

scanf("%f", &a);

printf("Enter b:");

scanf("%f", &b);

printf("Enter c:");

scanf("%f", &c);

printf("Enter i:");

scanf("%f", i);

delta = pow(b, 2) - 4*a*c;

sr = sqrt(delta);

printf("Delta is: %.2f", delta);

if(delta==0)

{

r1 = r2 = (-b/ (2*a));

printf("r1 = r2 = %.2f", r2);

}

else if(delta > 0)

{

r1 = (-b + sr)/ 2*a;

r2 = (-b - sr)/ 2*a;

printf("The roots of the equation are : %f %f", r1, r2);

}

else

{

r1 = (-b / 2*a) + (i*(-sr/2*a));

r2 = (-b / 2*a) - (i*(-sr/2*a));

printf("The roots of the equation are: %f %f", r1, r2);

}

}