can't capture the input

I enter the value , but the program doesn't capture the value
what's the problem ?

Code:

#include<stdio.h>


struct book
{
	float fPrice;
	int iNumPages;
	int iYear;
};


void get_details( float* , int*, int* );
int main()
{
	struct book sMybook = { 25.50 , 690 , 2005};
	struct book sHerbook;


	float fdiff;
	float x;
	int y, z;


	
	get_details( &x ,&y ,&z);


	x=sHerbook.fPrice;
	y=sHerbook.iNumPages;
	z=sHerbook.iYear;


	printf("My book :\n");
	printf("%.2f\t%d\t%d\n", sMybook.fPrice, sMybook.iNumPages, sMybook.iYear );


	printf("Her book :\n");
	printf("%.2f\t%d\t%d\n", sHerbook.fPrice, sHerbook.iNumPages, sHerbook.iYear);


	fdiff = sMybook.fPrice - sHerbook.fPrice; 
	printf("the difference in price is %.4f\n", fdiff );






	if (sMybook.iYear > sHerbook.iYear )
		printf("Mine is greatest ");
	else 
		printf("Her's is greatest");


	return 0;
}


void get_details( float*a , int*b , int*c ) 
{
	printf("enter book price:\n");
	scanf("%f", a);
	printf("Enter number of pages:\n");
	scanf("%d", b);
	printf("Enter year:\n");
	scanf("%d", c );
}

someone please correct me
Thank you !

> get_details( &x ,&y ,&z);
> x=sHerbook.fPrice;
> y=sHerbook.iNumPages;
> z=sHerbook.iYear;

Perhaps you meant
sHerbook.fPrice = x;

Perhaps you could also do
get_details( &sHerbook.fPrice ,&sHerbook.iNumPages ,&sHerbook.iYear);

oh I see ..
Thank you very much