Eroare de compilare: user.cpp:5:21: error: iostream.h: No such file or directory user.cpp: In function ‘int main()’: user.cpp:15: warning: comparison between signed and unsigned integer expressions user.cpp:18: warning: comparison between signed and unsigned integer expressions user.cpp:29: error: ‘cout’ was not declared in this scope user.cpp:29: error: ‘endl’ was not declared in this scope user.cpp:13: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result