Compilare: user.cpp: In function ‘void sortare()’: user.cpp:65:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j=0;j<componente[i].size();++j) ^ user.cpp: In function ‘void read()’: user.cpp:48:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&n,&m); ^ user.cpp:52:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&a,&b); ^