Compilare: user.cpp: In function ‘int main()’: user.cpp:8:9: warning: unused variable ‘n’ [-Wunused-variable] int n,t,k,x,a,b,i; ^ user.cpp:8:13: warning: unused variable ‘k’ [-Wunused-variable] int n,t,k,x,a,b,i; ^ user.cpp:8:15: warning: unused variable ‘x’ [-Wunused-variable] int n,t,k,x,a,b,i; ^