Compilare: user.cpp: In function ‘int main()’: user.cpp:167:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &T, &No, &K); ^ user.cpp:170:108: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%le%le%le%le%le%le", &v[i][0].x, &v[i][0].y, &v[i][1].x, &v[i][1].y, &v[i][2].x, &v[i][2].y); ^