Compilare: main.cpp: In member function 'char InParser::read_ch()': main.cpp:17:38: 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); ^ main.cpp: In function 'void dfs(int)': main.cpp:174:17: warning: 'care' may be used uninitialized in this function [-Wmaybe-uninitialized] hv[nod] = care; ~~~~~~~~^~~~~~