Compilare: user.cpp: In function ‘int main()’: user.cpp:29:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(ifp, "%d", &t); ^ user.cpp:32:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(ifp, "%d", &n); ^ user.cpp:35:42: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(ifp, "%d %d", &v[i].a, &v[i].b); ^