#include <stdio.h>
int combinacao(int n, int k){
if (k == n || k <= 0) // caso base
return 1;
else if(k > n){
return 0;
}
return combinacao(n - 1, k - 1) + combinacao(n - 1, k); // a recursão só funciona se o caso base estiver correto
}
int main(void){
int combina = combinacao(10, 20);
printf("%d", combina);
return 0;
}
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