Compilare: user.c: In function ‘main’: user.c:83:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d%d%d", &n, &x, &y); ^ user.c:99:26: warning: ‘t’ may be used uninitialized in this function [-Wmaybe-uninitialized] rez = comb(n + y - x - t + 1, n); ^