Eroare de compilare: user.cpp: In function ‘void insert(int, char*, int, bool)’: user.cpp:33: error: ‘realloc’ was not declared in this scope user.cpp: In function ‘int main()’: user.cpp:102: error: ‘realloc’ was not declared in this scope user.cpp:97: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:98: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:100: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:106: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:109: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result user.cpp:114: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result