Compilare: main.cpp: In function 'void quicksort(uint, uint)': main.cpp:26:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(vec[i] < pivot) i++; main.cpp:27:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(vec[j] > pivot) j--; main.cpp:31:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(lo < j) quicksort(lo, j); ~~~^~~ main.cpp:32:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i < hi) quicksort(i, hi); ~~^~~~ main.cpp: In function 'int main(int, const char**)': main.cpp:57:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < N; ++i) fout<<vec[ i ]<<" "; ~~^~~