Compilare: user.cpp: In function ‘void desc(long long int)’: user.cpp:24: warning: unused variable ‘d’ user.cpp: In function ‘int main()’: user.cpp:45: warning: format ‘%ld’ expects type ‘long int*’, but argument 2 has type ‘long long int*’ user.cpp:43: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:44: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:45: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:49: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result