Compilare: user.c:5:6: warning: return type of ‘main’ is not ‘int’ [-Wmain] gigi main() { ^ user.c: In function ‘main’: user.c:13:6: warning: unused variable ‘nrcel’ [-Wunused-variable] int nrcel = 0; ^ user.c:11:8: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%lu\n", &t); ^ user.c:22:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%lu%lu",&n, &k); ^