Compilare: user.cpp: In function ‘int main()’: user.cpp:13:17: warning: unused variable ‘nr_zero’ [-Wunused-variable] int n,l,c,h,nr_zero,nr,ok; ^ user.cpp:14:10: warning: unused variable ‘oc’ [-Wunused-variable] bool oc; ^ 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:21:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&b[i]); ^