void find_entrance_sides ()
{
    int flag = 0;

    for(j = 0; j < maxColonna; j+=maxColonna - 1){
        for(i = 0; i < maxRiga; i++){
            finding_point();

void finding_point () {
    if(labyrinth[i][j] == '.') {
                        printf("Found the entrance\n");
                        labyrinth[i][j] = 'X';
                        flag++;
                        print_maze();
                }
}