Compilare: user.c: In function ‘main’: user.c:23:23: warning: format ‘%d’ expects argument of type ‘int’, but argument 3 has type ‘long long int’ [-Wformat=] fprintf(fout, "%d\n", s); ^ user.c:7:5: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &n); ^~~~~~~~~~~~~~~~~~~~~ user.c:10:7: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &x); ^~~~~~~~~~~~~~~~~~~~~