Compilare: user.cpp: In function ‘long long int desc(long long int)’: user.cpp:16: warning: unused variable ‘sum2’ user.cpp: In function ‘int main()’: user.cpp:56: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:57: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:59: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘long long int cautare(long long int, long long int, long long int)’: user.cpp:53: warning: control reaches end of non-void function