Compilare: user.cpp: In function ‘int main()’: user.cpp:8:9: warning: unused variable ‘i’ [-Wunused-variable] int p,i,n,j,mx=0,pt=0,pl=0,l,nr; ^ user.cpp:8:13: warning: unused variable ‘j’ [-Wunused-variable] int p,i,n,j,mx=0,pt=0,pl=0,l,nr; ^ user.cpp:28:9: warning: ‘l’ may be used uninitialized in this function [-Wmaybe-uninitialized] out<<l; ^