#include <stdio.h>

main()
//below here a block is starting //
{
      int  years;
      int  adult = 18;

      printf("How old are you? ");
      scanf("%d", &years);
      printf("You are %d years old\n", years);

/* The if statement below describes that if the users age is below that
       which is specified, then the code in the block below it will be displayed*/

    if (years < adult)
    {
      printf("You are too young to be using this program\n");
      printf("You are %d years below the age limit for the use of this program\n", adult - years);
      printf("This application will now exit\n");
    }

    if (years > adult)
    {
      printf("Access granted to vault...\n");
      printf("Your age has been verified, you are %d year(s) older than %d\n", years - adult, adult);
    }
      fflush(stdin);
      getchar();
}