/*  Fun‡”es - Introdu‡„o.
		C lculo combinat˘rio - II.
		PP, 96.12                                                       */

#include <stdio.h>

main()
{   int n, p;

	printf("C lculo de Combina‡”es de n p a p\n");
	printf("Introduza o valor de n :"); scanf("%d", &n);
	printf("Introduza o valor de p :"); scanf("%d", &p);

	printf("Combina‡”es de %d %d a %d = %d", n, p, p, fact(n)/(fact(p)*fact(n-p)));
}

int fact(int n)
{   int nf, i;

	printf("\tCalculo %d factorial...", n);

	nf = n;
	for (i=n-1; i>1; i--) nf = nf*i;

	printf("OK!\n");
	return(nf);
}