Compilare: user.cpp: In function ‘void update(int)’: user.cpp:174:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(; pos <= ssize; pos += lsb(pos)) ^ user.cpp: In function ‘int main()’: user.cpp:233:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for1(i, ssize) ^ user.cpp:3:35: note: in definition of macro ‘for1’ #define for1(i,n) for(int i=1; i<=n; i++) ^ user.cpp: In member function ‘char InParsare::read_character()’: user.cpp:33:43: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buffer, 1, CHARMAX, fin); ^