Compilare: user.cpp: In function ‘int main()’: user.cpp:147:24: warning: division by zero [-Wdiv-by-zero] printf("%d", 1 / 0); ^ user.cpp: In member function ‘char InParser::read_ch()’: user.cpp:17:32: 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, 4096, fin); ^