Thread: how to call a function that takes a STRUCT parameter

I just want to call the function : outputboo(), but I dont know how

Code:

/*Enthusiastic
Pessimism
desensitize
uniqueness
*/

#include <stdio.h>
#include <string.h>

struct Books{
   char  title[50];
   char  author[50];
   char  subject[100];
   int   book_id;
};
struct Books printhello();
int  outputboo(struct Books boo);

int main( ){

printhello();
int outputboo();

}

    int outputboo(struct Books boo){
    printf(" here is your value of the function of the STRUCT :%i",&boo.book_id );

}

      struct Books printhello(){
      struct Books boo ;
      printf("Enter your book # here please :");
      scanf("%i",&boo.book_id);
      printf("your boo book_id is : %i\n\n\n\n\n\n\n\n\n\n", boo.book_id);
      ;
}