Compilare: user.cpp: In function ‘void read(point&)’: user.cpp:59: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘int main()’: user.cpp:183: warning: comparison between signed and unsigned integer expressions user.cpp:195: warning: comparison between signed and unsigned integer expressions user.cpp:217: warning: comparison between signed and unsigned integer expressions user.cpp:223: warning: comparison between signed and unsigned integer expressions user.cpp:229: warning: comparison between signed and unsigned integer expressions user.cpp:147: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:148: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:154: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result