Compilare: user.cpp: In function ‘int main()’: user.cpp:7:13: warning: unused variable ‘no’ [-Wunused-variable] {int n,i,nr,no,cont=0,desc=0,inc=0; ^ user.cpp:7:16: warning: unused variable ‘cont’ [-Wunused-variable] {int n,i,nr,no,cont=0,desc=0,inc=0; ^ user.cpp:22:5: warning: ‘nr’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(nr==1) ^