Compilare: user.cpp:8: warning: ‘typedef’ was ignored in this declaration user.cpp: In function ‘int main()’: user.cpp:38: warning: unused variable ‘p’ user.cpp:15: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:16: warning: ‘n’ may be used uninitialized in this function