Compilare: user.cpp: In function ‘int main()’: user.cpp:23:13: warning: unused variable ‘k’ [-Wunused-variable] int i,j,k; ^ user.cpp:22:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(si,"%i %i",&n,&m); ^ user.cpp:35:41: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(si,"%i %i %i",&s.x,&s.y,&s.z); ^ user.cpp:36:41: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(si,"%i %i %i",&f.x,&f.y,&f.z); ^ user.cpp:39:45: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(si,"%i %i %i",&l.x,&l.y,&l.z); ^