Compilare: user.cpp: In function ‘int main()’: user.cpp:22:65: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(si,"%i %i %i %i %i %i",&x,&y,&st.x,&st.y,&od.x,&od.y); ^ user.cpp:24:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(si,"%i",&n); ^ user.cpp:27:45: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(si,"%i %i",&ro[i].x,&ro[i].y); ^