Compilare: user.cpp: In function ‘int main()’: user.cpp:14:46: warning: too many arguments for format [-Wformat-extra-args] fscanf (f, "&lld&lld&lld&lld",&n,&k,&a,&b); ^ user.cpp:14:47: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (f, "&lld&lld&lld&lld",&n,&k,&a,&b); ^ user.cpp:17:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (f,"%lld",&x); ^