Compilare: user.cpp: In function ‘int main()’: user.cpp:162:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < Q.size(); i++) { ^ user.cpp:163:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (j < U.size() && U[j].k <= Q[i].k) { ^ user.cpp: In constructor ‘Parser::Parser(const char*)’: user.cpp:13:35: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(b, SIZE, 1, fin); ^ user.cpp: In member function ‘void Parser::plusC()’: user.cpp:31:39: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(b, SIZE, 1, fin); ^