gistfile1.c

int** sous_matrice(int** mat, int row, int col, int taille)
{
    int i, j, k, l;
    int **new_mat;
    new_mat = malloc(taille * taille * sizeof (int));
    i = 0;
    k = 0;
    while (k < taille)
    {
        if (k == row)
            k++;
        j = 0;
        l = 0;
        while (l < taille)
        {
            if (l = col)
                l++;
            new_mat[i][j] = mat[k][l];
            j++;
            l++;
        }
        i++;
        k++;
    }
    return new_mat;
}

int det(int** mat, int taille)
{
    int i, j, result = 0;
    if (taille == 1)
        return (mat[0][0]);
    else
    {
        for (i = 0; i < taille; i++)
        {
            result += mat[0][i] * det(sous_matrice(&mat, 0, i, taille - 1), taille - 1);
        }
        return result;
    }
}