Compilare: user.cpp: In function ‘int main()’: user.cpp:22:7: warning: unused variable ‘d’ [-Wunused-variable] int d = 2, ap; ^ user.cpp:22:14: warning: unused variable ‘ap’ [-Wunused-variable] int d = 2, ap; ^ user.cpp:19:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &n, &k); ^