Compilare: user.cpp: In member function ‘char InParser::read_ch()’: user.cpp:24:39: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buff, 1, BSIZE, fin); ^ user.cpp: In function ‘int main()’: user.cpp:91:27: warning: ‘last’ may be used uninitialized in this function [-Wmaybe-uninitialized] write_ch(vu32 % 10 + '0'); ^ user.cpp:152:13: note: ‘last’ was declared here int last; ^