Compilare: user.cpp: In function ‘int main()’: user.cpp:54:9: warning: unused variable ‘t’ [-Wunused-variable] int t,n,k,i,t1,t2,t3,tc; ^ user.cpp:54:13: warning: unused variable ‘k’ [-Wunused-variable] int t,n,k,i,t1,t2,t3,tc; ^ user.cpp:54:15: warning: unused variable ‘i’ [-Wunused-variable] int t,n,k,i,t1,t2,t3,tc; ^ user.cpp:54:17: warning: unused variable ‘t1’ [-Wunused-variable] int t,n,k,i,t1,t2,t3,tc; ^ user.cpp:54:20: warning: unused variable ‘t2’ [-Wunused-variable] int t,n,k,i,t1,t2,t3,tc; ^ user.cpp:54:23: warning: unused variable ‘t3’ [-Wunused-variable] int t,n,k,i,t1,t2,t3,tc; ^ user.cpp:54:26: warning: unused variable ‘tc’ [-Wunused-variable] int t,n,k,i,t1,t2,t3,tc; ^