Compilare: user.cpp: In function ‘int main()’: user.cpp:34:12: warning: unused variable ‘aux’ [-Wunused-variable] { int n, aux, i; ^ user.cpp:36:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &n); ^ user.cpp:80:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d%d", &x, &y); ^