C program to find roots of quadratic equation.

#include<stdio.h>

#include<conio.h>

#include<math.h>

void main() {

float a,b,c,d,x1,x2;

clrscr();

printf("Enter coefficients a,b,c of Quadratic equation\n");

scanf("%f%f%f",&a,&b,&c);

d=(b*b)-(4*a*c);

if (d<0) printf("Roots are imagnary\n");

else {

if (d==0) {

printf("Roots are real and equal\n");

x1=x2=(-b)/(2*a);

printf("x1=%f and x2=%f\n",x1,x2);

}

else {

printf("Roots are real and diffreant\n");

x1=(-b)+(sqrt(d)/(2*a));

x2=(-b)-(sqrt(d)/(2*a));

printf("x1=%f and x2=%f\n",x1,x2);

}

}

getch();

}