Write a program to read three real Num x,y,z and evaluates their avg. the Num read in a function Readdata() and Getavarage() evaluates the data and returns the value to main()

   1:  #include<stdio.h>

   2:  #include<conio.h>

   3:  void readdata();

   4:  float getaverage();

   5:  float x,y,z;

   6:  void main()

   7:  {

   8:  float average;

   9:  readdata();

  10:  average=getaverage();

  11:  printf("Average = %f\n",average);

  12:  getch();

  13:  }

  14:  void readdata()

  15:  {

  16:  printf("Enter x,y and z:\n");

  17:  scanf("%f%f%f",&x,&y,&z);

  18:  }

  19:  float getaverage()

  20:  {

  21:  float av;

  22:  av=(x+y+z)/3;

  23:  return(av);

  24:  }