Compilare: user.cpp: In function ‘int main()’: user.cpp:132: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:133: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:134: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result user.cpp:135: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result user.cpp:146: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:149: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result user.cpp: In member function ‘bool huge::operator>(huge&)’: user.cpp:89: warning: control reaches end of non-void function /tmp/cc9urHEO.o: In function `main': user.cpp:(.text+0x3ee): warning: the `gets' function is dangerous and should not be used.