Compilare: user.cpp: In function ‘int main()’: user.cpp:114:18: warning: variable ‘a’ set but not used [-Wunused-but-set-variable] int i, x, T, a; ^ user.cpp: In function ‘char getChar()’: user.cpp:156:60: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] if(pos == BUF_SIZE) pos=0, fread(buf, 1, BUF_SIZE, fin); ^