C Program for Quadratic Equations

C Program For Quadratic Equations

#include<stdio.h>                                                               
#include<math.h>                                                             
                                                                                
void main()                                                                     
{                                                                               
 float a, b, c, discriminant, root1, root2;                                     
 printf("Input values of a, b and c:\n");                                       
 scanf("%f %f %f", &a, &b, &c);                                                 
                                                                                
 printf("a: %f\nb: %f\nc: %f\n",a,b,c);                                          
 discriminant = b*b - 4*a*c;                                                    
 if(discriminant < 0)                                                           
 {                                                                              
  printf("\n\nRoots are imaginary\n");                                          
 }                                                                              
 else                                                                           
 {                                                                              
  root1 = (-b + sqrt(discriminant)/2.0*a);                                      
  root2 = (-b - sqrt(discriminant)/2.0*a);                                      
  printf("\n\nRoot1 = %5.2f\n\nRoot2 = %5.2f\n", root1, root2);                 
 }                                                                              
}   

$ cc quadratic-equation.c -lm
$ ./a.out 
Input values of a, b and c:
2 
4
-6
a: 2.000000
b: 4.000000
c: -6.000000


Root1 =  4.00

Root2 = -12.00
$ ./a.out 
Input values of a, b and c:
1 
2
3
a: 1.000000
b: 2.000000
c: 3.000000

Roots are imaginary