Compilare: user.cpp: In function ‘int freadFopen(const char*, char*&)’: user.cpp:274:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (result != lSize) {fputs ("Reading error",stderr); exit (3);} ^ user.cpp: In function ‘int KthNaive(std::vector<Entry>&, int)’: user.cpp:61:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int KthQSSelect(std::vector<Entry>&, int, int, int, int)’: user.cpp:121:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int freadFopen(const char*, char*&)’: user.cpp:280:1: warning: control reaches end of non-void function [-Wreturn-type] } ^