Compilare: user.cpp: In function ‘void countsort(int, unsigned int*, unsigned int*)’: user.cpp:9:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<n;i++) ^ user.cpp: In function ‘int main()’: user.cpp:32:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<n;i++) ^ user.cpp:35:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<n;i+=10) ^