Compilare: user.cpp: In function ‘void componente(int)’: user.cpp:13:7: warning: variable ‘pp’ set but not used [-Wunused-but-set-variable] bool pp=false; ^ user.cpp: In function ‘int main()’: user.cpp:66:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<multimi[i].size();j++) ^ user.cpp:40:27: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d %d ",&n,&m); ^ user.cpp:44:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d %d ",&x,&y); ^