Compilare: user.cpp: In function ‘int main()’: user.cpp:21:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&n); ^ user.cpp:23:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&v[i]); ^ user.cpp:40:19: warning: ‘nrmax’ may be used uninitialized in this function [-Wmaybe-uninitialized] afisare(nrmax); ^