Compilare: user.cpp: In function ‘int main()’: user.cpp:15:17: warning: unused variable ‘k’ [-Wunused-variable] int t,v[1001],i,k,cate=0,s,s2,j; ^ user.cpp:15:26: warning: unused variable ‘s’ [-Wunused-variable] int t,v[1001],i,k,cate=0,s,s2,j; ^ user.cpp:15:28: warning: unused variable ‘s2’ [-Wunused-variable] int t,v[1001],i,k,cate=0,s,s2,j; ^