Write a program to declaring operand as a block variable defined in if block

   1:  #include<stdio.h>

   2:  #include<conio.h>

   3:  #include<math.h>

   4:  void main()

   5:  {

   6:  int x;

   7:  printf("Enter an interger num:\n");

   8:  scanf("%d",&x);

   9:  if(x>0)

  10:  {

  11:  float r;

  12:  r=1/float(x);

  13:  printf("\nReciprocal of %d is: %f\n",x,r);

  14:  }

  15:  else

  16:  printf("X is too small to evaluate reciprocal:");

  17:  getch();

  18:  }