Compilare: user.cpp: In function ‘int main()’: user.cpp:34:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&n); ^ user.cpp:36:43: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d",&v[i].x,&v[i].y); ^ user.cpp:47:8: warning: ‘poz’ may be used uninitialized in this function [-Wmaybe-uninitialized] j--; ^