Compilare: user.cpp: In function ‘void find_div(long long int)’: user.cpp:49: warning: unused variable ‘ok’ user.cpp: In function ‘int main()’: user.cpp:77: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:78: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:83: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:88: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘void find_div(long long int)’: user.cpp:65: warning: ‘i’ may be used uninitialized in this function