Compilare: user.c: In function ‘main’: user.c:27:3: warning: format ‘%d’ expects argument of type ‘int’, but argument 3 has type ‘long long int’ [-Wformat=] fprintf(out, "%d", rez / 2); ^ user.c:8:19: warning: unused variable ‘x’ [-Wunused-variable] int n, a, b, i, x; ^ user.c:9:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d%d%d", &n, &a, &b); ^ user.c:11:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &v[i]); ^