Compilare: user.cpp: In function ‘int main()’: user.cpp:24:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<t;i++) ^ user.cpp:22:20: warning: unused variable ‘n’ [-Wunused-variable] unsigned int t,n,i; ^ user.cpp:22:22: warning: unused variable ‘i’ [-Wunused-variable] unsigned int t,n,i; ^