Compilare: user.cpp: In function ‘int main()’: user.cpp:33:11: warning: unused variable ‘a’ [-Wunused-variable] int i,a=1,j,b=(1<<10),m,z; ^ user.cpp:33:17: warning: unused variable ‘b’ [-Wunused-variable] int i,a=1,j,b=(1<<10),m,z; ^ user.cpp:33:27: warning: unused variable ‘m’ [-Wunused-variable] int i,a=1,j,b=(1<<10),m,z; ^ user.cpp:33:29: warning: unused variable ‘z’ [-Wunused-variable] int i,a=1,j,b=(1<<10),m,z; ^