Compilare: user.cpp: In function ‘void BFS()’: user.cpp:60:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0; i<L[a].size(); ++i){ ^ user.cpp: In function ‘bool DFS(int)’: user.cpp:78:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0; i<L[x].size(); ++i)//vizitez vecinul doar daca nu ma intorc ^ user.cpp: In function ‘void citire()’: user.cpp:40:47: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d %d %d %d", &n, &m, &X, &Y); ^ user.cpp:42:37: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d %d", &a, &b); ^