Compilare: user.cpp: In member function ‘bool comx::operator=(double)’: user.cpp:25:5: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int get_id(char)’: user.cpp:100:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:104:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("stradacramei.in","r",stdin); ^ user.cpp:105:43: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("stradacramei.out","w",stdout); ^ user.cpp:107:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s\n%s", s1, s2); ^