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- #include <stdio.h>
- long int fat(long int n);
- long int c (long int n, long int p);
- int main (void);
- long int fat (long int n)
- {
- if (n == 1) return 1;
- if (n == 0) return 0;
- return n*fat(n-1);
- }
- long int c (long int n, long int p)
- {
- long int comb;
- comb = fat(n)/(fat(n-p)*fat(p));
- return comb;
- }
- int main (void)
- {
- long int n, p;
- while (1)
- {
- scanf ("%ld %ld", &n, &p);
- if (n < p) break;
- printf ("O valor da combinacao de %ld %ld a %ld vale %ld\n", n, p, p, c(n,p));
- }
- return 0;
- }
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