Compilare: main.cpp: In member function 'char OutParser::put_char(char)': main.cpp:57:3: warning: no return statement in function returning non-void [-Wreturn-type] } ^ main.cpp: In function 'int dfs(int, int)': main.cpp:98:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v[nod].size(); i++) ~~^~~~~~~~~~~~~~~ main.cpp: In function 'void decomposition(int, int, bool)': main.cpp:119:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v[nod].size(); i++) ~~^~~~~~~~~~~~~~~ main.cpp: In member function 'char InParser::get_char()': main.cpp:17:55: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buff, sizeof(buff[0]), BUFF_SIZE, in_file); ^