Compilare: user.cpp: In function ‘void read(point&)’: user.cpp:58: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘int main()’: user.cpp:181: warning: comparison between signed and unsigned integer expressions user.cpp:193: warning: comparison between signed and unsigned integer expressions user.cpp:212: warning: comparison between signed and unsigned integer expressions user.cpp:218: warning: comparison between signed and unsigned integer expressions user.cpp:224: warning: comparison between signed and unsigned integer expressions user.cpp:146: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:147: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:153: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result