Compilare: main.cpp: In function 'void quick(int, int)': main.cpp:31:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(poz==k) ~~~^~~ main.cpp:33:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(poz>k) ~~~^~ main.cpp:35:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] else if(poz<k) ~~~^~ main.cpp: In function 'int main()': main.cpp:43:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=n;i++) ~^~~