Eroare de compilare: user.cpp: In constructor ‘node::node()’: user.cpp:10: error: ‘memset’ was not declared in this scope user.cpp:11: warning: suggest parentheses around assignment used as truth value user.cpp: In function ‘int main()’: user.cpp:63: warning: comparison between signed and unsigned integer expressions user.cpp:67: warning: comparison between signed and unsigned integer expressions user.cpp:53: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:53: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:54: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result user.cpp:54: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:56: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result