Compilare: user.cpp: In function ‘int main()’: user.cpp:40:44: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( int j = 0; j < pts[i].size(); j ++ ) ^ user.cpp:12:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for ( fscanf( fin, "%d", &t ); t > 0; t -- ) { ^ user.cpp:14:51: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d%d%d", &v[0], &v[1], &v[2] ); ^