Compilare: user.cpp: In function ‘int main()’: user.cpp:50:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<v[now.nod].size();++i) ^ user.cpp:21:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d%d",&K,&n,&p); ^ user.cpp:24:37: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d",&d[i],&c[i]); ^ user.cpp:31:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d",&x,&y); ^