Compilare: main.cpp: In function 'void dfsPlus(int)': main.cpp:68:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i<graf[node].size(); i++) ~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'void dfsMinus(int)': main.cpp:79:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i<graf[node].size(); i++) ~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:127:31: warning: format '%d' expects argument of type 'int', but argument 2 has type 'std::vector<std::vector<int> >::size_type {aka long unsigned int}' [-Wformat=] printf("%d\n",comps.size()); ^ main.cpp:128:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0;j<comps.size();j++) ~^~~~~~~~~~~~~ main.cpp:130:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0;i<comps[j].size();i++) ~^~~~~~~~~~~~~~~~ main.cpp: In member function 'char InParser::read_ch()': 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); ^