Compilare: user.cpp: In function ‘bool verifica(std::vector<Pereche>)’: user.cpp:116:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0;i < t.size();i ++) ^ user.cpp:129:13: warning: pointer to a function used in arithmetic [-Wpointer-arith] if(dfs[1] == 0) ^ user.cpp: In function ‘int main()’: user.cpp:174:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(lista[i].size() >= (n/2)) ^ user.cpp: In function ‘bool dfs(int, int)’: user.cpp:88:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:153:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&n); ^ user.cpp:155:43: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d %d",&v[i].x,&v[i].y); ^