Compilare: main.cpp:5:0: warning: ignoring #pragma warning [-Wunknown-pragmas] #pragma warning(disable:4996) main.cpp: In function 'void DFS(int)': main.cpp:72:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] else if (str <= st.size()) ~~~~^~~~~~~~~~~~ main.cpp: In member function 'char InParser::read()': main.cpp:22:29: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buff, 1, 4096, fin); ^