Compilare: user.cpp: In function ‘int main()’: user.cpp:17:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(si,"%i",&n); ^ user.cpp:21:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(si,"%i",&v[i]); ^ user.cpp:48:13: warning: ‘el’ may be used uninitialized in this function [-Wmaybe-uninitialized] so<<el<<' '<<maxx<<'\n'; ^