Compilare: user.cpp: In function ‘int main()’: user.cpp:12:25: warning: variable ‘ok’ set but not used [-Wunused-but-set-variable] int i,j,n,v[nmax],x,ok,lg; ^ user.cpp:12:28: warning: unused variable ‘lg’ [-Wunused-variable] int i,j,n,v[nmax],x,ok,lg; ^ user.cpp:15:22: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&n); ^ user.cpp:19:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&v[i]); ^