Compilare: main.cpp: In member function 'char InParser::read_ch()': main.cpp:12:57: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] if(sp == 4096) {sp = 0;fread(buff, 1, 4096, fin);} ^