Compilare: user.cpp: In function ‘int main()’: user.cpp:52:7: warning: variable ‘x’ set but not used [-Wunused-but-set-variable] i64 x; ^ user.cpp: In function ‘char getch(FILE*)’: user.cpp:21:32: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buftea, 1, BUFF, fin); ^