For a valid triange,sum of any two sides must be grater than the third side. Write a program to read and evaluate its area if data are valid and exit with an appropriate message otherwise.Use two functions to check data and display area

   1:  #include<stdio.h>

   2:  #include<math.h>

   3:  #include<conio.h>

   4:  int dataok(float a,float b,float c)

   5:  {

   6:  if(a+b>c && b+c>a && c+a>b)

   7:  return(1);

   8:  else

   9:  return(0);

  10:  }

  11:  float getarea(float a,float b,float c)

  12:  {

  13:  float s,area;

  14:  s=(a+b+c)/2.0;

  15:  area=s*(s-a)*(s-b)*(s-c)/2.0;

  16:  area=sqrt(area);

  17:  return(area);

  18:  }

  19:  void main()

  20:  {

  21:  float a,b,c,area;

  22:  int valid;

  23:  printf("\nEnter a,b,c: ");

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

  25:  valid=dataok(a,b,c);

  26:  if(valid==1)

  27:  {

  28:  area=getarea(a,b,c);

  29:  printf("\nArea of Triangel is: %f\n",area);

  30:  }

  31:  else

  32:  printf("The Sides do not form valid triangel\n");

  33:  getch();

  34:  }