Compilare: user.cpp: In function ‘int main()’: user.cpp:60:13: warning: unused variable ‘prod’ [-Wunused-variable] int n,i,prod,nrf,j,d,elem,cop,div,me,nr,e; ^ user.cpp:60:18: warning: unused variable ‘nrf’ [-Wunused-variable] int n,i,prod,nrf,j,d,elem,cop,div,me,nr,e; ^ user.cpp:60:26: warning: variable ‘elem’ set but not used [-Wunused-but-set-variable] int n,i,prod,nrf,j,d,elem,cop,div,me,nr,e; ^ user.cpp:60:31: warning: unused variable ‘cop’ [-Wunused-variable] int n,i,prod,nrf,j,d,elem,cop,div,me,nr,e; ^ user.cpp:60:35: warning: unused variable ‘div’ [-Wunused-variable] int n,i,prod,nrf,j,d,elem,cop,div,me,nr,e; ^ user.cpp:61:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d",&n); ^ user.cpp:63:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d",&v[i]); ^