Write a Program to Find roots of quadratic equation

   1:  #include<stdio.h>

   2:  #include<conio.h>

   3:  #include<math.h>

   4:  #include<stdlib.h>

   5:  void readdata();

   6:  void checkdata();

   7:  void showroots();

   8:  float a,b,c,delta,root1,root2;

   9:  void main()

  10:  {

  11:  readdata();

  12:  checkdata();

  13:  showroots();

  14:  getch();

  15:  }

  16:  void readdata()

  17:  {

  18:  printf("\nEnter co-eff of a,b,c:");

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

  20:  }

  21:  void checkdata()

  22:  {

  23:  if(a==0)

  24:  {

  25:  printf("\nRoots cannot be found");

  26:  exit(0);

  27:  }

  28:  delta=b*b-4.0*a*c;

  29:  if(delta<0)

  30:  {

  31:  printf("\nRoots are imaginary");

  32:  exit(0);

  33:  }

  34:  }

  35:   

  36:  void showroots()

  37:  {

  38:  root1=(-b+sqrt(delta))/(2*a);

  39:  root2=(-b-sqrt(delta))/(2*a);

  40:  printf("\nroot1=%f root2=%f",root1,root2);

  41:  }