Compilare: user.cpp: In function ‘int main()’: user.cpp:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:36: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:39: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘long int cb(long int, long int)’: user.cpp:20: warning: ‘med’ may be used uninitialized in this function user.cpp: In function ‘int main()’: user.cpp:33: warning: ‘max2’ may be used uninitialized in this function