Program to solve Quadratic Equation.

Program:
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#include<stdio.h>
#include<conio.h>
#include<math.h>

void main()
{
  int a,b,c;
  float x,x1,x2,D;

  printf("enter the value of a:");
  scanf("%d",&a);
  
  printf("Enter the value of b:");
  scanf("%d",&b);

  printf("Enter the value of c:");
  scanf("%d",&c);

  D=sqrt(b*b)-(4*a*c);

 if(D==0)
  {
      printf("roots are real and equal.");
      
      x=((-b)/(2*a));
      printf("\nx=%f",x);
  }
 else if(D>0)
  {
    printf("roots are real and distinct.");
    
    x1=((-b+D)/(2*a));
    x2=((-b-D)/(2*a));
    
    printf("\nx1=%f",x1);
    printf("\nx2=%f",x2);
  }
 else
  {
    printf("roots does not exist.");
  }
getch();

}
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Output :
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Enter the value of a:1
Enter the value of b:2
Enter the value of c:1

roots does not exist.
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