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#include <iostream>
#include <cmath>
using namespace std;

int main()
{
    double chiffre1, chiffre2, chiffre3, resultat;
    cout << "Entrez 3 chiffre: ";
    cin >> chiffre1 >> chiffre2 >> chiffre3;
    resultat = (chiffre1 + chiffre2 + chiffre3) / 3;
    cout << "Le resultat est " << resultat << endl;
    
}
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