Compilare: user.cpp: In function ‘int main()’: user.cpp:18:9: warning: unused variable ‘k’ [-Wunused-variable] int k=n/2; ^ user.cpp:23:16: warning: ‘co’ may be used uninitialized in this function [-Wmaybe-uninitialized] int li,co; ^ user.cpp:23:13: warning: ‘li’ may be used uninitialized in this function [-Wmaybe-uninitialized] int li,co; ^