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#include <iostream>
using namespace std;
// Déclaration de la fonction
int factorielle(int nb);
int main() {
int nombre, memoireNombre, resultat;
cout << "Factorielle - Entrez un nombre : ";
cin >> nombre;
memoireNombre = nombre;
resultat = factorielle(nombre);
cout << "La factorielle de " << memoireNombre << " est " << resultat << endl;
return 0;
}
// Définition de la fonction
int factorielle(int nb) {
if (nb == 0 || nb == 1) return 1; // gestion des cas 0! et 1!
int result = nb;
for (int i = nb - 1; i > 1; i--) {
result *= i;
}
return result;
}
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