//-------------------------------------------------------------------
//	uselib.cpp
//
//	This program shows how a C++ application can use our Shared 
//	Library of C functions (named 'libcomb.so') if we assume it
//	is located in our current working directory:
//
//	compile using: $ g++ uselib.cpp -o uselib -L. -lcomb -Wl,-rpath,.
//
//	Alternatively, a user with suitable privileges can move the 
//	shared object file 'libcomb.so' to the system sub-directory 
//	'/usr/local/lib' and then recompile this application using:
//
//	$ g++ uselib.cpp -o uselib -L. -lcomb -Wl,-rpath,/usr/local/lib
//
//	programmer: ALLAN CRUSE
//	written on: 14 MAY 2003
//-------------------------------------------------------------------

#include <stdio.h>	// for printf(), perror() 
#include <fcntl.h>	// for open() 
#include <stdlib.h>	// for exit() 
#include <unistd.h>	// for read(), write(), close() 

extern "C" unsigned int comb( int n, int m );
extern "C" unsigned int fibonacci( unsigned int n );
extern "C" unsigned int factorial( unsigned int n );

int main( int argc, char **argv )
{
	int	i, r, k;
	
	// print a list of factorial values
	printf( "\n\nSome factorial values: \n\n" );
	for (i = 0; i < 10; i++) printf( " %d ", factorial( i ) ); 
	printf( "\n" );

	// print a list of fibonacci values	
	printf( "\n\nSome fibonacci values: \n\n" );
	for (i = 0; i < 10; i++) printf( " %d ", fibonacci( i ) ); 
	printf( "\n" );

	// print some rows of Pascal's Triangle
	printf( "\n\nSome rows of the Pascal Triangle: \n" );
	for (r = 0; r < 10; r++)
		{
		printf( "\n" );
		for (k = 0; k <= r; k++) printf( "%5d ", comb( r, k ) );
		}
	printf( "\n" );	
	
	printf( "\n\n" );	
}