Compilare: user.cpp: In function ‘int main()’: user.cpp:37: warning: operation on ‘Pow1’ may be undefined user.cpp:38: warning: operation on ‘Pow2’ may be undefined user.cpp:50: warning: operation on ‘Pow1’ may be undefined user.cpp:51: warning: operation on ‘Pow2’ may be undefined user.cpp:17: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:18: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:22: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result